Department ofEmployment ......‘premium’ 64 bit systems. Some explanation follows. Windows 3.1...
Transcript of Department ofEmployment ......‘premium’ 64 bit systems. Some explanation follows. Windows 3.1...
DepartmentofEmploymentEconomicDevelopmentandInnovation
NorthernmusterInformationforruralbusinessinnorthQueensland
Producingqualityfoodandfibreforahealthybottomline
inthisedition
BreedcowandDynama 2 onnewcomputers
Dalrymplediary 4
Marketreport 6
Plannedbreedingusing 8 newtechnologies
Understandingthevarious 10 BREEDPLANEBVs
Fertilebullsarealsquomust 14 haversquotoincreaseyour
herdrsquosprofitability 10
Measuringbreeder 20 20
performancetoimprove t
performanceandlongterm
Augu
s
profitability
Improveyourbottomline 24 25
withselectionindexes ue
s
Bullselectiondecisions Is26 withaprofitdrivenfocus
Improvingprofitabletraits 30 usingBREEDPLAN
Wormsandmeatsheep 30 inthetropics
editorialWelcometotheWinterSpring2010editionoftheNorthernmuster
ThisissueincludesmarketreportDalrymplediaryandafeatureongeneticsandbullselection
ThebullsellingseasonisverycloseWhatcriteriawillyouusetoselectbullstoimprovetheprofitabilityofyourherd
FeedbackinthepasthasaskedforBreedplanEBVstobeexplainedThisissueaddressesthetopicAlsocoveredareplannedbreedingusingbreedingobjectivestheneedforfertilebullstodotheworkunderstanding$Indexesandsomecasestudieswherebullbuyingdecisionshaveincludedmeasuredinformationaboutthebulls
HowmanyyearsdoesthebullyoupurchasetodayinfluenceyourherdforIfyouuseabullforfouryearsandkeephisdaughtersforupto10yearsthatrsquos15yearsdirectinfluencefromonebullIsthatworthmakingsureheissiringenoughcalvesandthattheymeetyourexpectations
EnjoythenewsletterForadviceandcontactingDEEDIstaffphone132523 Pleasefilloutthefeedbacksheettelluswhatinformationyouneedandsenditin
Thankyoutoouradvertisersandsupportteams
AlanLaingEditor
QueenslandGovernment
BreedcowandDynamaonnewcomputers
IhavebeenaskedaboutrunningBreedcowandDynamaonWindowsVistaandWindows7The
answerisalsorelevanttootherlsquoheritagersquosoftwareincludingsomeeducationalandgamessoftware
BreedcowandDynamarunsjustfineontheusual32bitVistasystemsIpresumethesamewillapplyto32bitWindows7systemsBCampDwillNOTrunonthelsquopremiumrsquo64bitsystemsSomeexplanationfollows
Windows31wasalsquo16bitrsquosystemSoftwarewrittenin16bitplatformscanbeidentifiedbytheneedtolimitfilenamestoeightcharactersBreedcowandDynamaiswrittenina16bitplatformandtheownersofthatplatformshownoindicationsofupdatingWindows95throughtoXPandmostoftheVistaandWindows7systemsare32bitTheseallowlongfilenamessothathelpsidentifythemThe32bitsystemswillrun16bitor32bitapplications
Thenewestandmostpowerfulsystemsarethelsquo64bitrsquosystemsandthesenolongeraccommodate16bitsoftware
Apparentlytherersquossome16biteducationalandgamessoftwareouttheretoothatsuddenlydoesnrsquotworkanymoresoBreedcowandDynamaisnotonitsown
FortunatelythereisafixThatfixistoputapieceofsoftwarebehindWindowswhichletsyouswapbetweenoperatingsystemsndashruneitherthenew64bitprogramoranolderversionsuchasXPdependingontheneedofthemomentYoursquollneedtokeepyouroldXPprogramCDsforthis
ThesoftwarethatIhavebeenreferredtoiscalledVMWare(freeofftheweb)IunderstandthatthereareothersimilarprogramssothisdoesnotconstituteaproductendorsementIhavenotusedanyofthemmyselfsoIcanrsquotwalkyouthroughthestepsbutifyoucanrsquotusetheoldfavouritesanymorethismaybethesolution
SoifyouabsolutelyMUSThavethelatest64bitcomputerandyoualsowanttokeeprunningtheheritagesoftwareyoursquollneedsomethinglikeVMWareoritsequivalentYourcomputertechiecanprobablyadviseyouonthisAlternatelystickwitha32bitsystem
OnanothersubjectthewebsiteaddressforthefreeupdatetoexistingBreedcowandDynamainstallationsisnowhttpwwwdpiqldgovau16_6886htm
ThismaychangeagainastheoldDPIbecomespartofDEEDIWatchthisspace
WE (Bill) Holmes PrincipalAgriculturalEconomistDEEDITownsvillePhone0747601563 Mobile0419646919
AdvertisementsareacceptedforpublicationontheunderstandingthattheycomplywiththerelevantprovisionsoftheTradePracticesActandwiththeAustralianAssociationofNationalAdvertisersCodeofPractice
TheEditorreservestherighttorefuseorwithdrawanyadvertisementathisowndiscretionNoendorsementbytheDepartmentofEmploymentEconomicDevelopmentandInnovationisintendedorimpliedbytheadvertisementofanyproductintheNorthernmuster
IfyouknowofanyonewhowouldliketoreceivetheNorthernmusterdropusanoteat
DEEDI POBox15AyrQld4807Ph0747205100Fax0747205198
Email ToniaGrundydeediqldgovauAlanLaingdeediqldgovau
TheDepartmentofEmploymentEconomicDevelopmentandInnovation(DEEDI)seekstomaximisetheeconomicpotentialofQueenslandrsquosprimaryindustriesonasustainablebasis
copyTheStateofQueenslandEmploymentEconomicDevelopmentandInnovation2010
ExceptaspermittedbytheCopyrightAct1968nopartoftheworkmayinanyformorbyanyelectronicmechanicalphotocopyingrecordingoranyothermeansbereproducedstoredinaretrievalsystemorbebroadcastortransmittedwithoutthepriorwrittenpermissionofDEEDITheinformationcontainedhereinissubjecttochangewithoutnoticeThecopyrightownershallnotbeliablefortechnicalorothererrorsoromissionscontainedhereinThereaderuseracceptsallrisksandresponsibilityforlossesdamagescostsandotherconsequencesresultingdirectlyorindirectlyfromusingthisinformation
Enquiriesaboutreproductionincludingdownloadingorprintingthewebversionshouldbedirectedto
ipcudeediqldgovauortelephone+61732251398
ISBN14417804
Northernmuster Issue252
Stop botuliSm burning a hole in your pocket
wwwpfizeranimalhealthcomauHealth Performance Growth
1 Pfizer data on file economic modelling Pfizer Australia Pty Ltd 38 42 Wharf Road West Ryde NSW 2114 Freecall 1800 335 374 regRegistered trademark of Pfizer Australia HampT PAL0042
Botulism is usually a death sentence for cattle which could mean a death sentence for your bottom line
Vaccinating your herd with Longrangereg or Ultravacreg Botulinum can stop the economical impact on your herd In fact you could save yourself $76 for every $1 spent on vaccination even if only 10 of your mature breeders are affected by botulism1
Longrangereg is the recommended vaccine for weaners and previously unvaccinated cattle Thereafter an annual booster of Longrangereg or Ultravacreg Botulinum will maintain immunity
Annual vaccination is recommended as it reduces the risk of waning immunity bullprotects calves by maximising maternal antibody production bullsimplifies management bulltakes the guess work out of knowing which animals have been bullvaccinated by picking up any that were missed the previous year
For more information contact your rural reseller or your Pfizer Vaccine Specialist on 1800 335 374
Northernmuster Issue25 3
dalrymplediary
WQ BMP Project ndash First case study released ThefirstoffourcasestudiesfortheWQBMPprojecthasnowbeencompletedAsmallfielddaytolaunchtheoutcomesoftheprojectwasheldatAmitynearMingelaonthe20June2010
ThecasestudyonAmityisbasedaroundsplittingamuchlargerpaddockintofourwhileadoptingawetseasonspellingprogramacrossthreeofthefourpaddocksinthefirstyearoftheprojectResultspresentedshowedanimprovementinDryMatterYieldofbetween16ndash20afteronewetseasonspell
CopiesoftheAmitycasestudycanbeobtainedfromtheDLCdirectlybycontactingJohnNicholasThisprojectissupportedbyfundingfromtheAustralianGovernmentrsquosCaringforourCountryandNQDryTropicsNRM
DLC is now online TheDalrympleLandcareCommitteeisproudtoannouncethatourwebsitehasnowopenedatwwwdalrymplelandcareorgauThesitehasbeendevelopedintherecentmonthsandshowcasestheworkoftheproducersintheregionaswellastohostusefulinformationandresourcestootherinformation
ThetargetedaudiencesforthesiteincludeboththegeneralpublicwantingtofindoutmoreabouttheDLCandourmembersndashlandholdersinthedistrictAsuiteofusefulresourcesandlinkshavebeenprovidedonthesiteincluding
bull Weed ID and control
bull Trainingeducation opportunities and tools
bull Grazier focused publications
bull Links to producer services in the region
bull Upcoming fundingevents
bull History of projectsevents
bull Gallery of photosPlaceStories
IwouldencourageproducerstotakethetimetovisitthewebsiteIfyouhaveanysuggestionsonhowthesitecouldbeimproveddonothesitatetocontactJohn
City Country Day 2010ThesecondCityCountryDaywasagainheraldedasuccessfortheDLCOver40peopleattendedtoursoneofthethreetoursonoffertolearnmoreabouthowfoodisproducedandwhatfoodcanbe
producedinthelocalareaaswellastheimportanceofsustainablelandmanagementHostpropertiesfor2010includedThalangaWambianaandRiverview
TheagesandbackgroundsoftheguestswasvariedacrossalltoursincludinganumberoffamiliesManyoftheguestswerealsokeentotaketheopportunitytotryhandsonactivitieslikepregtestingacowdiggingpotatoesormilkingacow
Plansareunderwayforthe2011CityCountryDayandanyoneinterestedinassistingorhostingagroupshouldcontactJohnNicholas
National Landcare Forum ndash Adelaide TheNationalLandcareForumheldinAdelaideduringMarchwasattendedbyPhilCookBobShepherdJohnandRhondaLyonsandJohnNicholasThetwodayforumofferedlittleopportunityforfeedbackorinput
AwiderangeofspeakerspresentedonthehistoryofLandcareaswellasthechallengesthatitiscurrentlyexperiencingThefutureofLandcarewasalsotouchedoninregardstothedevelopmentofNationalFrameworkforLandcareFortheDLCtheforumwasnotwhatweexpectedandweweredisappointedwithaspectsoftheeventQueenslandtheRangelandsorLandcareintheRangelandsbarelyratedamentionleavinglittleopportunityforinputorrelevancetoourcause
ImportantlytheDLCdidmakesomecontactswithkeypeopleinthechainandeffortsarebeingmadetobringtheseshortcomingsoftheforumtotheattentionoforganisers
JohnLyonspresentedattheforuminthelsquoCuttingEdgeLandcareFarmingrsquosessionJohnrsquospresentationonthedevelopmentoftheLyonrsquosfamilybusinessinconjunctionwiththeenvironmentandLandcarewasverywellpresentedOver150attendedJohnrsquospresentationanditwasverywellreceivedbyall
Composedby
John Nicholas ProjectOfficerDalrympleLandcareCommitteeIncPOBox976 ChartersTowersQLD4820Ph0747615170johnnicholasdeediqldgovau
ThenextDLCGeneralMeetingisproposedforthe9September2010
Northernmuster Issue254
5Northern muster Issue 25
ImagIne 3 year protection from Botulinum
from only one dose
Think how much time and money yoursquoll save
The most potent fastest acting and longest lasting vaccine on the market
Northernmuster Issue256
troeprtek
Mar
0 102ne
uJ
OurusualmarkettrendforwinterisinplaceinnorthQueenslandwithamplesupplyofallcattle
descriptionsandlowercattlepricesTherecentannouncementofa350kgupperweightlimitforliveexportcattletoIndonesiawillfurtheraddtotheflushofslaughterstockinthemarketplaceAtpresentouronlyexportworksinthefarnorthSwiftrsquosabattoiratTownsvilleisbookedupformanyweeksaheadandthiswilllikelycontinueintotheSpringHopefullyastheyearwearsonandslaughtercattlesupplytightenspriceswillimproveOnthepositivesideforqualitycattleisthewidespreadrainoveralotofeasternAustraliaoverthelast6monthswhichupsthedemandforstorestockandreplacementbreeders
ThevalueoftheAustraliandollarhasbeenquitevolatileoverthelastfewmonthsbutmoreimportantlyforourindustryitfellbelow90centstotheUSdollarandatpresentishoveringinthemid80centareaIftheeconomicsituationwillallowittostaydownnear80centsitwillassistourexportersandhopefullyflowthroughtodomesticpricesForthefirst5monthsof2010ourbeefexportswereback9yearonyearat348883tonneswithJapanUSAandKorealeadingthewaySalesintoRussiaareshowingpromiseagainassuppliesfromArgentinaremaintight
Australiarsquosbeefexportswereback3in2009to927277tonnes775millionheadslaughteredback26onpreviousyearbutQueenslandrsquosexportsremainedsteadyat535568tonnesTheconcentrationoffeedlotsinsouth-eastQueenslandplusthepreferenceforgrowingoutheavyexportsteershasseenQueenslandsupply70ofallbeefsenttoJapanin2009(249000tonnes)
OntheCertifiedAustraliangrassfedbeeffrontwheelsareturningbehindthescenesondevelopingtherulesregulationsandaccreditationprocessCorevaluessuchasHGPandantibioticfreeandnograinfeedingplusMSAgradingwillunderpintheproduct
Australianfeedlotnumberswereback8inthefirstquarterof2010to711198headFeedercattlepricesgrainvaluesandslaughterratesarenotgivingfavourablereturnsalthoughAustraliahassecuredmarketaccessintotheEUforaccreditedcattlewithgoodvaluesandbestgridpricesatpresentareforcattlesuitableforthispremiumfeedlotmarketInFebruarythisyeartheUSAandAustraliawereauthorisedtosupplytheEUsnew20000tonneglobalhighqualitybeefquotaTheseEUmarketsarebyfarthemostlucrativeavailabletoaccreditedAustralianproducersatpresent
AquickflickthroughanyofourruralpresspublicationsoflatewillrevealthatwehavemorethantheusualnumberofcattlepropertiesonthemarketinnorthQueenslandMyreadingofthesituationisthatournumberoneenemy the cost price squeeze is biting hard combinedwithhighfinancialcostsboughtaboutbyinflatedpropertypricesoverthelastfewyears
Live export Asmentionedabovethe350kgweightrestrictionforcattledestinedforIndonesiaannouncedinearlyJunehasthrownabitofaspannerintothelivetradeconsidering
Indonesiatookaprox84ofourtotalliveexportslastyearThe350kglimitdecreehasbeeninexistencesince2008andhadneverbeenenforceduntilnowJustbeforethisproblemwehadthenewsofrestrictionsonourliveexportagentsobtainingimportpermitswhichhadsloweddownthetradeaswell
OfficiallytheIndonesianGovernmenthasexpressedthedesirefortheircountrytobecomemoreselfsufficientintheirownbeefsupplywhichishardtoimaginewiththeirpopulationndashlandareaequation
PricesquotedforsteersmidJunedeliveredtoTownsvilleare$160kgwithnoindividualweightsover340kgCattlearealsorequiredforaboatoutofKarumba
Interestinglyduring2009WesternAustraliawasthemainliveexportstatewith377ofshipments349NorthernTerritoryand21fromQueensland
ThereisnewsofaliveexportshipmentfromTownsvilledestinedforEgyptinlateAugustMalecattleonlywithratesforlightercattle(290ndash360kg)$173deliveredChartersTowersiftheymeetallthespecificationsThisboatwillalsotakecattleupto550kgliveweight($163kg)
Japan AttheendofMayafootandmouthdiseaseoutbreakwasannouncedinthesouthernislandsofthecountryTheoutbreakistheworstonrecordwithcaseson126farmsTherehasbeen285confirmedandsuspectedcasesandabout190000head(beefandpigs)culledortoabouttobedestroyedTheareaaffectedisanimportantWagyuproductionareaandhasresultedinthebanningofJapaneseexportsofthishighqualityproductInterestinglytheJapsexportapproximately680tonnesannuallyofWagyuproductwiththemainmarketsbeingVietnamHongKongandUSA
TodatethediseaseoutbreakhashadnoimpactondomesticmeatconsumptionandinternalGovernmentsourcesbelievethattheireconomyhasbeenpickingupsteadilyActualmeatpurchasesweresteadilydecliningduring2009buthaveshownsoftimprovementinto2010
AustralianbeefsalesthisyearfromJanuaryuntilendofMaywere2belowthesametimelastyearat144341tonnes
ThestrongvalueoftheYenagainsttheUS$hasassistedUSAbeefimportsandAprilimportvolumes(6302tonnes)were48higherthanApril2009figuresAllUSAproductmuststillbefromanimalsunder21monthsofage
TheJapaneseGovernmenthaslegislatedtocontinuethecurrentbeeftariff(385)to31March2011
Korea FootandmouthdiseasehasalsobeendetectedhereattheendofAprilandasyetitrsquoshadnoimpactonconsumerbeefpurchasesInearlyJunemoretalkswereheldinKoreaonprogressingafreetradeagreementbetweenournationsandfromallreportstherehasbeenpositiveprogress
Korearsquosdomesticcattleslaughterhasdeclined12inthe
Compu
dose Incre
asing Australian beef production
for
- 25 YEARS -
ManyhappyreturnsElanco congratulates the thousands of beef producers who have made Compudose Australiarsquos leading brand of implants But the returns are all yours
Compudosersquos proven 158 liveweight gain advantage1
helps Australian beef producers to turn off an additional 30000 tonnes of world-class beef every year And thatrsquos not including the benefits of turning off cattle earlier
For more information about how Compudose can increase the profitability of your beef business contact Elanco on 1800 226 324 or visit wwwelancocomau today
Youknowitworks1BF5870 2Based on Elanco sales data typical liveweight gains and cattle prices Elancoreg Compudosereg and the diagonal colour bar are trademarks of Eli Lilly and Company regCompudose is a trademark for Elancorsquos brand of oestradiol EAH1719
Northernmuster Issue25 7
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
BreedcowandDynamaonnewcomputers
IhavebeenaskedaboutrunningBreedcowandDynamaonWindowsVistaandWindows7The
answerisalsorelevanttootherlsquoheritagersquosoftwareincludingsomeeducationalandgamessoftware
BreedcowandDynamarunsjustfineontheusual32bitVistasystemsIpresumethesamewillapplyto32bitWindows7systemsBCampDwillNOTrunonthelsquopremiumrsquo64bitsystemsSomeexplanationfollows
Windows31wasalsquo16bitrsquosystemSoftwarewrittenin16bitplatformscanbeidentifiedbytheneedtolimitfilenamestoeightcharactersBreedcowandDynamaiswrittenina16bitplatformandtheownersofthatplatformshownoindicationsofupdatingWindows95throughtoXPandmostoftheVistaandWindows7systemsare32bitTheseallowlongfilenamessothathelpsidentifythemThe32bitsystemswillrun16bitor32bitapplications
Thenewestandmostpowerfulsystemsarethelsquo64bitrsquosystemsandthesenolongeraccommodate16bitsoftware
Apparentlytherersquossome16biteducationalandgamessoftwareouttheretoothatsuddenlydoesnrsquotworkanymoresoBreedcowandDynamaisnotonitsown
FortunatelythereisafixThatfixistoputapieceofsoftwarebehindWindowswhichletsyouswapbetweenoperatingsystemsndashruneitherthenew64bitprogramoranolderversionsuchasXPdependingontheneedofthemomentYoursquollneedtokeepyouroldXPprogramCDsforthis
ThesoftwarethatIhavebeenreferredtoiscalledVMWare(freeofftheweb)IunderstandthatthereareothersimilarprogramssothisdoesnotconstituteaproductendorsementIhavenotusedanyofthemmyselfsoIcanrsquotwalkyouthroughthestepsbutifyoucanrsquotusetheoldfavouritesanymorethismaybethesolution
SoifyouabsolutelyMUSThavethelatest64bitcomputerandyoualsowanttokeeprunningtheheritagesoftwareyoursquollneedsomethinglikeVMWareoritsequivalentYourcomputertechiecanprobablyadviseyouonthisAlternatelystickwitha32bitsystem
OnanothersubjectthewebsiteaddressforthefreeupdatetoexistingBreedcowandDynamainstallationsisnowhttpwwwdpiqldgovau16_6886htm
ThismaychangeagainastheoldDPIbecomespartofDEEDIWatchthisspace
WE (Bill) Holmes PrincipalAgriculturalEconomistDEEDITownsvillePhone0747601563 Mobile0419646919
AdvertisementsareacceptedforpublicationontheunderstandingthattheycomplywiththerelevantprovisionsoftheTradePracticesActandwiththeAustralianAssociationofNationalAdvertisersCodeofPractice
TheEditorreservestherighttorefuseorwithdrawanyadvertisementathisowndiscretionNoendorsementbytheDepartmentofEmploymentEconomicDevelopmentandInnovationisintendedorimpliedbytheadvertisementofanyproductintheNorthernmuster
IfyouknowofanyonewhowouldliketoreceivetheNorthernmusterdropusanoteat
DEEDI POBox15AyrQld4807Ph0747205100Fax0747205198
Email ToniaGrundydeediqldgovauAlanLaingdeediqldgovau
TheDepartmentofEmploymentEconomicDevelopmentandInnovation(DEEDI)seekstomaximisetheeconomicpotentialofQueenslandrsquosprimaryindustriesonasustainablebasis
copyTheStateofQueenslandEmploymentEconomicDevelopmentandInnovation2010
ExceptaspermittedbytheCopyrightAct1968nopartoftheworkmayinanyformorbyanyelectronicmechanicalphotocopyingrecordingoranyothermeansbereproducedstoredinaretrievalsystemorbebroadcastortransmittedwithoutthepriorwrittenpermissionofDEEDITheinformationcontainedhereinissubjecttochangewithoutnoticeThecopyrightownershallnotbeliablefortechnicalorothererrorsoromissionscontainedhereinThereaderuseracceptsallrisksandresponsibilityforlossesdamagescostsandotherconsequencesresultingdirectlyorindirectlyfromusingthisinformation
Enquiriesaboutreproductionincludingdownloadingorprintingthewebversionshouldbedirectedto
ipcudeediqldgovauortelephone+61732251398
ISBN14417804
Northernmuster Issue252
Stop botuliSm burning a hole in your pocket
wwwpfizeranimalhealthcomauHealth Performance Growth
1 Pfizer data on file economic modelling Pfizer Australia Pty Ltd 38 42 Wharf Road West Ryde NSW 2114 Freecall 1800 335 374 regRegistered trademark of Pfizer Australia HampT PAL0042
Botulism is usually a death sentence for cattle which could mean a death sentence for your bottom line
Vaccinating your herd with Longrangereg or Ultravacreg Botulinum can stop the economical impact on your herd In fact you could save yourself $76 for every $1 spent on vaccination even if only 10 of your mature breeders are affected by botulism1
Longrangereg is the recommended vaccine for weaners and previously unvaccinated cattle Thereafter an annual booster of Longrangereg or Ultravacreg Botulinum will maintain immunity
Annual vaccination is recommended as it reduces the risk of waning immunity bullprotects calves by maximising maternal antibody production bullsimplifies management bulltakes the guess work out of knowing which animals have been bullvaccinated by picking up any that were missed the previous year
For more information contact your rural reseller or your Pfizer Vaccine Specialist on 1800 335 374
Northernmuster Issue25 3
dalrymplediary
WQ BMP Project ndash First case study released ThefirstoffourcasestudiesfortheWQBMPprojecthasnowbeencompletedAsmallfielddaytolaunchtheoutcomesoftheprojectwasheldatAmitynearMingelaonthe20June2010
ThecasestudyonAmityisbasedaroundsplittingamuchlargerpaddockintofourwhileadoptingawetseasonspellingprogramacrossthreeofthefourpaddocksinthefirstyearoftheprojectResultspresentedshowedanimprovementinDryMatterYieldofbetween16ndash20afteronewetseasonspell
CopiesoftheAmitycasestudycanbeobtainedfromtheDLCdirectlybycontactingJohnNicholasThisprojectissupportedbyfundingfromtheAustralianGovernmentrsquosCaringforourCountryandNQDryTropicsNRM
DLC is now online TheDalrympleLandcareCommitteeisproudtoannouncethatourwebsitehasnowopenedatwwwdalrymplelandcareorgauThesitehasbeendevelopedintherecentmonthsandshowcasestheworkoftheproducersintheregionaswellastohostusefulinformationandresourcestootherinformation
ThetargetedaudiencesforthesiteincludeboththegeneralpublicwantingtofindoutmoreabouttheDLCandourmembersndashlandholdersinthedistrictAsuiteofusefulresourcesandlinkshavebeenprovidedonthesiteincluding
bull Weed ID and control
bull Trainingeducation opportunities and tools
bull Grazier focused publications
bull Links to producer services in the region
bull Upcoming fundingevents
bull History of projectsevents
bull Gallery of photosPlaceStories
IwouldencourageproducerstotakethetimetovisitthewebsiteIfyouhaveanysuggestionsonhowthesitecouldbeimproveddonothesitatetocontactJohn
City Country Day 2010ThesecondCityCountryDaywasagainheraldedasuccessfortheDLCOver40peopleattendedtoursoneofthethreetoursonoffertolearnmoreabouthowfoodisproducedandwhatfoodcanbe
producedinthelocalareaaswellastheimportanceofsustainablelandmanagementHostpropertiesfor2010includedThalangaWambianaandRiverview
TheagesandbackgroundsoftheguestswasvariedacrossalltoursincludinganumberoffamiliesManyoftheguestswerealsokeentotaketheopportunitytotryhandsonactivitieslikepregtestingacowdiggingpotatoesormilkingacow
Plansareunderwayforthe2011CityCountryDayandanyoneinterestedinassistingorhostingagroupshouldcontactJohnNicholas
National Landcare Forum ndash Adelaide TheNationalLandcareForumheldinAdelaideduringMarchwasattendedbyPhilCookBobShepherdJohnandRhondaLyonsandJohnNicholasThetwodayforumofferedlittleopportunityforfeedbackorinput
AwiderangeofspeakerspresentedonthehistoryofLandcareaswellasthechallengesthatitiscurrentlyexperiencingThefutureofLandcarewasalsotouchedoninregardstothedevelopmentofNationalFrameworkforLandcareFortheDLCtheforumwasnotwhatweexpectedandweweredisappointedwithaspectsoftheeventQueenslandtheRangelandsorLandcareintheRangelandsbarelyratedamentionleavinglittleopportunityforinputorrelevancetoourcause
ImportantlytheDLCdidmakesomecontactswithkeypeopleinthechainandeffortsarebeingmadetobringtheseshortcomingsoftheforumtotheattentionoforganisers
JohnLyonspresentedattheforuminthelsquoCuttingEdgeLandcareFarmingrsquosessionJohnrsquospresentationonthedevelopmentoftheLyonrsquosfamilybusinessinconjunctionwiththeenvironmentandLandcarewasverywellpresentedOver150attendedJohnrsquospresentationanditwasverywellreceivedbyall
Composedby
John Nicholas ProjectOfficerDalrympleLandcareCommitteeIncPOBox976 ChartersTowersQLD4820Ph0747615170johnnicholasdeediqldgovau
ThenextDLCGeneralMeetingisproposedforthe9September2010
Northernmuster Issue254
5Northern muster Issue 25
ImagIne 3 year protection from Botulinum
from only one dose
Think how much time and money yoursquoll save
The most potent fastest acting and longest lasting vaccine on the market
Northernmuster Issue256
troeprtek
Mar
0 102ne
uJ
OurusualmarkettrendforwinterisinplaceinnorthQueenslandwithamplesupplyofallcattle
descriptionsandlowercattlepricesTherecentannouncementofa350kgupperweightlimitforliveexportcattletoIndonesiawillfurtheraddtotheflushofslaughterstockinthemarketplaceAtpresentouronlyexportworksinthefarnorthSwiftrsquosabattoiratTownsvilleisbookedupformanyweeksaheadandthiswilllikelycontinueintotheSpringHopefullyastheyearwearsonandslaughtercattlesupplytightenspriceswillimproveOnthepositivesideforqualitycattleisthewidespreadrainoveralotofeasternAustraliaoverthelast6monthswhichupsthedemandforstorestockandreplacementbreeders
ThevalueoftheAustraliandollarhasbeenquitevolatileoverthelastfewmonthsbutmoreimportantlyforourindustryitfellbelow90centstotheUSdollarandatpresentishoveringinthemid80centareaIftheeconomicsituationwillallowittostaydownnear80centsitwillassistourexportersandhopefullyflowthroughtodomesticpricesForthefirst5monthsof2010ourbeefexportswereback9yearonyearat348883tonneswithJapanUSAandKorealeadingthewaySalesintoRussiaareshowingpromiseagainassuppliesfromArgentinaremaintight
Australiarsquosbeefexportswereback3in2009to927277tonnes775millionheadslaughteredback26onpreviousyearbutQueenslandrsquosexportsremainedsteadyat535568tonnesTheconcentrationoffeedlotsinsouth-eastQueenslandplusthepreferenceforgrowingoutheavyexportsteershasseenQueenslandsupply70ofallbeefsenttoJapanin2009(249000tonnes)
OntheCertifiedAustraliangrassfedbeeffrontwheelsareturningbehindthescenesondevelopingtherulesregulationsandaccreditationprocessCorevaluessuchasHGPandantibioticfreeandnograinfeedingplusMSAgradingwillunderpintheproduct
Australianfeedlotnumberswereback8inthefirstquarterof2010to711198headFeedercattlepricesgrainvaluesandslaughterratesarenotgivingfavourablereturnsalthoughAustraliahassecuredmarketaccessintotheEUforaccreditedcattlewithgoodvaluesandbestgridpricesatpresentareforcattlesuitableforthispremiumfeedlotmarketInFebruarythisyeartheUSAandAustraliawereauthorisedtosupplytheEUsnew20000tonneglobalhighqualitybeefquotaTheseEUmarketsarebyfarthemostlucrativeavailabletoaccreditedAustralianproducersatpresent
AquickflickthroughanyofourruralpresspublicationsoflatewillrevealthatwehavemorethantheusualnumberofcattlepropertiesonthemarketinnorthQueenslandMyreadingofthesituationisthatournumberoneenemy the cost price squeeze is biting hard combinedwithhighfinancialcostsboughtaboutbyinflatedpropertypricesoverthelastfewyears
Live export Asmentionedabovethe350kgweightrestrictionforcattledestinedforIndonesiaannouncedinearlyJunehasthrownabitofaspannerintothelivetradeconsidering
Indonesiatookaprox84ofourtotalliveexportslastyearThe350kglimitdecreehasbeeninexistencesince2008andhadneverbeenenforceduntilnowJustbeforethisproblemwehadthenewsofrestrictionsonourliveexportagentsobtainingimportpermitswhichhadsloweddownthetradeaswell
OfficiallytheIndonesianGovernmenthasexpressedthedesirefortheircountrytobecomemoreselfsufficientintheirownbeefsupplywhichishardtoimaginewiththeirpopulationndashlandareaequation
PricesquotedforsteersmidJunedeliveredtoTownsvilleare$160kgwithnoindividualweightsover340kgCattlearealsorequiredforaboatoutofKarumba
Interestinglyduring2009WesternAustraliawasthemainliveexportstatewith377ofshipments349NorthernTerritoryand21fromQueensland
ThereisnewsofaliveexportshipmentfromTownsvilledestinedforEgyptinlateAugustMalecattleonlywithratesforlightercattle(290ndash360kg)$173deliveredChartersTowersiftheymeetallthespecificationsThisboatwillalsotakecattleupto550kgliveweight($163kg)
Japan AttheendofMayafootandmouthdiseaseoutbreakwasannouncedinthesouthernislandsofthecountryTheoutbreakistheworstonrecordwithcaseson126farmsTherehasbeen285confirmedandsuspectedcasesandabout190000head(beefandpigs)culledortoabouttobedestroyedTheareaaffectedisanimportantWagyuproductionareaandhasresultedinthebanningofJapaneseexportsofthishighqualityproductInterestinglytheJapsexportapproximately680tonnesannuallyofWagyuproductwiththemainmarketsbeingVietnamHongKongandUSA
TodatethediseaseoutbreakhashadnoimpactondomesticmeatconsumptionandinternalGovernmentsourcesbelievethattheireconomyhasbeenpickingupsteadilyActualmeatpurchasesweresteadilydecliningduring2009buthaveshownsoftimprovementinto2010
AustralianbeefsalesthisyearfromJanuaryuntilendofMaywere2belowthesametimelastyearat144341tonnes
ThestrongvalueoftheYenagainsttheUS$hasassistedUSAbeefimportsandAprilimportvolumes(6302tonnes)were48higherthanApril2009figuresAllUSAproductmuststillbefromanimalsunder21monthsofage
TheJapaneseGovernmenthaslegislatedtocontinuethecurrentbeeftariff(385)to31March2011
Korea FootandmouthdiseasehasalsobeendetectedhereattheendofAprilandasyetitrsquoshadnoimpactonconsumerbeefpurchasesInearlyJunemoretalkswereheldinKoreaonprogressingafreetradeagreementbetweenournationsandfromallreportstherehasbeenpositiveprogress
Korearsquosdomesticcattleslaughterhasdeclined12inthe
Compu
dose Incre
asing Australian beef production
for
- 25 YEARS -
ManyhappyreturnsElanco congratulates the thousands of beef producers who have made Compudose Australiarsquos leading brand of implants But the returns are all yours
Compudosersquos proven 158 liveweight gain advantage1
helps Australian beef producers to turn off an additional 30000 tonnes of world-class beef every year And thatrsquos not including the benefits of turning off cattle earlier
For more information about how Compudose can increase the profitability of your beef business contact Elanco on 1800 226 324 or visit wwwelancocomau today
Youknowitworks1BF5870 2Based on Elanco sales data typical liveweight gains and cattle prices Elancoreg Compudosereg and the diagonal colour bar are trademarks of Eli Lilly and Company regCompudose is a trademark for Elancorsquos brand of oestradiol EAH1719
Northernmuster Issue25 7
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Stop botuliSm burning a hole in your pocket
wwwpfizeranimalhealthcomauHealth Performance Growth
1 Pfizer data on file economic modelling Pfizer Australia Pty Ltd 38 42 Wharf Road West Ryde NSW 2114 Freecall 1800 335 374 regRegistered trademark of Pfizer Australia HampT PAL0042
Botulism is usually a death sentence for cattle which could mean a death sentence for your bottom line
Vaccinating your herd with Longrangereg or Ultravacreg Botulinum can stop the economical impact on your herd In fact you could save yourself $76 for every $1 spent on vaccination even if only 10 of your mature breeders are affected by botulism1
Longrangereg is the recommended vaccine for weaners and previously unvaccinated cattle Thereafter an annual booster of Longrangereg or Ultravacreg Botulinum will maintain immunity
Annual vaccination is recommended as it reduces the risk of waning immunity bullprotects calves by maximising maternal antibody production bullsimplifies management bulltakes the guess work out of knowing which animals have been bullvaccinated by picking up any that were missed the previous year
For more information contact your rural reseller or your Pfizer Vaccine Specialist on 1800 335 374
Northernmuster Issue25 3
dalrymplediary
WQ BMP Project ndash First case study released ThefirstoffourcasestudiesfortheWQBMPprojecthasnowbeencompletedAsmallfielddaytolaunchtheoutcomesoftheprojectwasheldatAmitynearMingelaonthe20June2010
ThecasestudyonAmityisbasedaroundsplittingamuchlargerpaddockintofourwhileadoptingawetseasonspellingprogramacrossthreeofthefourpaddocksinthefirstyearoftheprojectResultspresentedshowedanimprovementinDryMatterYieldofbetween16ndash20afteronewetseasonspell
CopiesoftheAmitycasestudycanbeobtainedfromtheDLCdirectlybycontactingJohnNicholasThisprojectissupportedbyfundingfromtheAustralianGovernmentrsquosCaringforourCountryandNQDryTropicsNRM
DLC is now online TheDalrympleLandcareCommitteeisproudtoannouncethatourwebsitehasnowopenedatwwwdalrymplelandcareorgauThesitehasbeendevelopedintherecentmonthsandshowcasestheworkoftheproducersintheregionaswellastohostusefulinformationandresourcestootherinformation
ThetargetedaudiencesforthesiteincludeboththegeneralpublicwantingtofindoutmoreabouttheDLCandourmembersndashlandholdersinthedistrictAsuiteofusefulresourcesandlinkshavebeenprovidedonthesiteincluding
bull Weed ID and control
bull Trainingeducation opportunities and tools
bull Grazier focused publications
bull Links to producer services in the region
bull Upcoming fundingevents
bull History of projectsevents
bull Gallery of photosPlaceStories
IwouldencourageproducerstotakethetimetovisitthewebsiteIfyouhaveanysuggestionsonhowthesitecouldbeimproveddonothesitatetocontactJohn
City Country Day 2010ThesecondCityCountryDaywasagainheraldedasuccessfortheDLCOver40peopleattendedtoursoneofthethreetoursonoffertolearnmoreabouthowfoodisproducedandwhatfoodcanbe
producedinthelocalareaaswellastheimportanceofsustainablelandmanagementHostpropertiesfor2010includedThalangaWambianaandRiverview
TheagesandbackgroundsoftheguestswasvariedacrossalltoursincludinganumberoffamiliesManyoftheguestswerealsokeentotaketheopportunitytotryhandsonactivitieslikepregtestingacowdiggingpotatoesormilkingacow
Plansareunderwayforthe2011CityCountryDayandanyoneinterestedinassistingorhostingagroupshouldcontactJohnNicholas
National Landcare Forum ndash Adelaide TheNationalLandcareForumheldinAdelaideduringMarchwasattendedbyPhilCookBobShepherdJohnandRhondaLyonsandJohnNicholasThetwodayforumofferedlittleopportunityforfeedbackorinput
AwiderangeofspeakerspresentedonthehistoryofLandcareaswellasthechallengesthatitiscurrentlyexperiencingThefutureofLandcarewasalsotouchedoninregardstothedevelopmentofNationalFrameworkforLandcareFortheDLCtheforumwasnotwhatweexpectedandweweredisappointedwithaspectsoftheeventQueenslandtheRangelandsorLandcareintheRangelandsbarelyratedamentionleavinglittleopportunityforinputorrelevancetoourcause
ImportantlytheDLCdidmakesomecontactswithkeypeopleinthechainandeffortsarebeingmadetobringtheseshortcomingsoftheforumtotheattentionoforganisers
JohnLyonspresentedattheforuminthelsquoCuttingEdgeLandcareFarmingrsquosessionJohnrsquospresentationonthedevelopmentoftheLyonrsquosfamilybusinessinconjunctionwiththeenvironmentandLandcarewasverywellpresentedOver150attendedJohnrsquospresentationanditwasverywellreceivedbyall
Composedby
John Nicholas ProjectOfficerDalrympleLandcareCommitteeIncPOBox976 ChartersTowersQLD4820Ph0747615170johnnicholasdeediqldgovau
ThenextDLCGeneralMeetingisproposedforthe9September2010
Northernmuster Issue254
5Northern muster Issue 25
ImagIne 3 year protection from Botulinum
from only one dose
Think how much time and money yoursquoll save
The most potent fastest acting and longest lasting vaccine on the market
Northernmuster Issue256
troeprtek
Mar
0 102ne
uJ
OurusualmarkettrendforwinterisinplaceinnorthQueenslandwithamplesupplyofallcattle
descriptionsandlowercattlepricesTherecentannouncementofa350kgupperweightlimitforliveexportcattletoIndonesiawillfurtheraddtotheflushofslaughterstockinthemarketplaceAtpresentouronlyexportworksinthefarnorthSwiftrsquosabattoiratTownsvilleisbookedupformanyweeksaheadandthiswilllikelycontinueintotheSpringHopefullyastheyearwearsonandslaughtercattlesupplytightenspriceswillimproveOnthepositivesideforqualitycattleisthewidespreadrainoveralotofeasternAustraliaoverthelast6monthswhichupsthedemandforstorestockandreplacementbreeders
ThevalueoftheAustraliandollarhasbeenquitevolatileoverthelastfewmonthsbutmoreimportantlyforourindustryitfellbelow90centstotheUSdollarandatpresentishoveringinthemid80centareaIftheeconomicsituationwillallowittostaydownnear80centsitwillassistourexportersandhopefullyflowthroughtodomesticpricesForthefirst5monthsof2010ourbeefexportswereback9yearonyearat348883tonneswithJapanUSAandKorealeadingthewaySalesintoRussiaareshowingpromiseagainassuppliesfromArgentinaremaintight
Australiarsquosbeefexportswereback3in2009to927277tonnes775millionheadslaughteredback26onpreviousyearbutQueenslandrsquosexportsremainedsteadyat535568tonnesTheconcentrationoffeedlotsinsouth-eastQueenslandplusthepreferenceforgrowingoutheavyexportsteershasseenQueenslandsupply70ofallbeefsenttoJapanin2009(249000tonnes)
OntheCertifiedAustraliangrassfedbeeffrontwheelsareturningbehindthescenesondevelopingtherulesregulationsandaccreditationprocessCorevaluessuchasHGPandantibioticfreeandnograinfeedingplusMSAgradingwillunderpintheproduct
Australianfeedlotnumberswereback8inthefirstquarterof2010to711198headFeedercattlepricesgrainvaluesandslaughterratesarenotgivingfavourablereturnsalthoughAustraliahassecuredmarketaccessintotheEUforaccreditedcattlewithgoodvaluesandbestgridpricesatpresentareforcattlesuitableforthispremiumfeedlotmarketInFebruarythisyeartheUSAandAustraliawereauthorisedtosupplytheEUsnew20000tonneglobalhighqualitybeefquotaTheseEUmarketsarebyfarthemostlucrativeavailabletoaccreditedAustralianproducersatpresent
AquickflickthroughanyofourruralpresspublicationsoflatewillrevealthatwehavemorethantheusualnumberofcattlepropertiesonthemarketinnorthQueenslandMyreadingofthesituationisthatournumberoneenemy the cost price squeeze is biting hard combinedwithhighfinancialcostsboughtaboutbyinflatedpropertypricesoverthelastfewyears
Live export Asmentionedabovethe350kgweightrestrictionforcattledestinedforIndonesiaannouncedinearlyJunehasthrownabitofaspannerintothelivetradeconsidering
Indonesiatookaprox84ofourtotalliveexportslastyearThe350kglimitdecreehasbeeninexistencesince2008andhadneverbeenenforceduntilnowJustbeforethisproblemwehadthenewsofrestrictionsonourliveexportagentsobtainingimportpermitswhichhadsloweddownthetradeaswell
OfficiallytheIndonesianGovernmenthasexpressedthedesirefortheircountrytobecomemoreselfsufficientintheirownbeefsupplywhichishardtoimaginewiththeirpopulationndashlandareaequation
PricesquotedforsteersmidJunedeliveredtoTownsvilleare$160kgwithnoindividualweightsover340kgCattlearealsorequiredforaboatoutofKarumba
Interestinglyduring2009WesternAustraliawasthemainliveexportstatewith377ofshipments349NorthernTerritoryand21fromQueensland
ThereisnewsofaliveexportshipmentfromTownsvilledestinedforEgyptinlateAugustMalecattleonlywithratesforlightercattle(290ndash360kg)$173deliveredChartersTowersiftheymeetallthespecificationsThisboatwillalsotakecattleupto550kgliveweight($163kg)
Japan AttheendofMayafootandmouthdiseaseoutbreakwasannouncedinthesouthernislandsofthecountryTheoutbreakistheworstonrecordwithcaseson126farmsTherehasbeen285confirmedandsuspectedcasesandabout190000head(beefandpigs)culledortoabouttobedestroyedTheareaaffectedisanimportantWagyuproductionareaandhasresultedinthebanningofJapaneseexportsofthishighqualityproductInterestinglytheJapsexportapproximately680tonnesannuallyofWagyuproductwiththemainmarketsbeingVietnamHongKongandUSA
TodatethediseaseoutbreakhashadnoimpactondomesticmeatconsumptionandinternalGovernmentsourcesbelievethattheireconomyhasbeenpickingupsteadilyActualmeatpurchasesweresteadilydecliningduring2009buthaveshownsoftimprovementinto2010
AustralianbeefsalesthisyearfromJanuaryuntilendofMaywere2belowthesametimelastyearat144341tonnes
ThestrongvalueoftheYenagainsttheUS$hasassistedUSAbeefimportsandAprilimportvolumes(6302tonnes)were48higherthanApril2009figuresAllUSAproductmuststillbefromanimalsunder21monthsofage
TheJapaneseGovernmenthaslegislatedtocontinuethecurrentbeeftariff(385)to31March2011
Korea FootandmouthdiseasehasalsobeendetectedhereattheendofAprilandasyetitrsquoshadnoimpactonconsumerbeefpurchasesInearlyJunemoretalkswereheldinKoreaonprogressingafreetradeagreementbetweenournationsandfromallreportstherehasbeenpositiveprogress
Korearsquosdomesticcattleslaughterhasdeclined12inthe
Compu
dose Incre
asing Australian beef production
for
- 25 YEARS -
ManyhappyreturnsElanco congratulates the thousands of beef producers who have made Compudose Australiarsquos leading brand of implants But the returns are all yours
Compudosersquos proven 158 liveweight gain advantage1
helps Australian beef producers to turn off an additional 30000 tonnes of world-class beef every year And thatrsquos not including the benefits of turning off cattle earlier
For more information about how Compudose can increase the profitability of your beef business contact Elanco on 1800 226 324 or visit wwwelancocomau today
Youknowitworks1BF5870 2Based on Elanco sales data typical liveweight gains and cattle prices Elancoreg Compudosereg and the diagonal colour bar are trademarks of Eli Lilly and Company regCompudose is a trademark for Elancorsquos brand of oestradiol EAH1719
Northernmuster Issue25 7
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
dalrymplediary
WQ BMP Project ndash First case study released ThefirstoffourcasestudiesfortheWQBMPprojecthasnowbeencompletedAsmallfielddaytolaunchtheoutcomesoftheprojectwasheldatAmitynearMingelaonthe20June2010
ThecasestudyonAmityisbasedaroundsplittingamuchlargerpaddockintofourwhileadoptingawetseasonspellingprogramacrossthreeofthefourpaddocksinthefirstyearoftheprojectResultspresentedshowedanimprovementinDryMatterYieldofbetween16ndash20afteronewetseasonspell
CopiesoftheAmitycasestudycanbeobtainedfromtheDLCdirectlybycontactingJohnNicholasThisprojectissupportedbyfundingfromtheAustralianGovernmentrsquosCaringforourCountryandNQDryTropicsNRM
DLC is now online TheDalrympleLandcareCommitteeisproudtoannouncethatourwebsitehasnowopenedatwwwdalrymplelandcareorgauThesitehasbeendevelopedintherecentmonthsandshowcasestheworkoftheproducersintheregionaswellastohostusefulinformationandresourcestootherinformation
ThetargetedaudiencesforthesiteincludeboththegeneralpublicwantingtofindoutmoreabouttheDLCandourmembersndashlandholdersinthedistrictAsuiteofusefulresourcesandlinkshavebeenprovidedonthesiteincluding
bull Weed ID and control
bull Trainingeducation opportunities and tools
bull Grazier focused publications
bull Links to producer services in the region
bull Upcoming fundingevents
bull History of projectsevents
bull Gallery of photosPlaceStories
IwouldencourageproducerstotakethetimetovisitthewebsiteIfyouhaveanysuggestionsonhowthesitecouldbeimproveddonothesitatetocontactJohn
City Country Day 2010ThesecondCityCountryDaywasagainheraldedasuccessfortheDLCOver40peopleattendedtoursoneofthethreetoursonoffertolearnmoreabouthowfoodisproducedandwhatfoodcanbe
producedinthelocalareaaswellastheimportanceofsustainablelandmanagementHostpropertiesfor2010includedThalangaWambianaandRiverview
TheagesandbackgroundsoftheguestswasvariedacrossalltoursincludinganumberoffamiliesManyoftheguestswerealsokeentotaketheopportunitytotryhandsonactivitieslikepregtestingacowdiggingpotatoesormilkingacow
Plansareunderwayforthe2011CityCountryDayandanyoneinterestedinassistingorhostingagroupshouldcontactJohnNicholas
National Landcare Forum ndash Adelaide TheNationalLandcareForumheldinAdelaideduringMarchwasattendedbyPhilCookBobShepherdJohnandRhondaLyonsandJohnNicholasThetwodayforumofferedlittleopportunityforfeedbackorinput
AwiderangeofspeakerspresentedonthehistoryofLandcareaswellasthechallengesthatitiscurrentlyexperiencingThefutureofLandcarewasalsotouchedoninregardstothedevelopmentofNationalFrameworkforLandcareFortheDLCtheforumwasnotwhatweexpectedandweweredisappointedwithaspectsoftheeventQueenslandtheRangelandsorLandcareintheRangelandsbarelyratedamentionleavinglittleopportunityforinputorrelevancetoourcause
ImportantlytheDLCdidmakesomecontactswithkeypeopleinthechainandeffortsarebeingmadetobringtheseshortcomingsoftheforumtotheattentionoforganisers
JohnLyonspresentedattheforuminthelsquoCuttingEdgeLandcareFarmingrsquosessionJohnrsquospresentationonthedevelopmentoftheLyonrsquosfamilybusinessinconjunctionwiththeenvironmentandLandcarewasverywellpresentedOver150attendedJohnrsquospresentationanditwasverywellreceivedbyall
Composedby
John Nicholas ProjectOfficerDalrympleLandcareCommitteeIncPOBox976 ChartersTowersQLD4820Ph0747615170johnnicholasdeediqldgovau
ThenextDLCGeneralMeetingisproposedforthe9September2010
Northernmuster Issue254
5Northern muster Issue 25
ImagIne 3 year protection from Botulinum
from only one dose
Think how much time and money yoursquoll save
The most potent fastest acting and longest lasting vaccine on the market
Northernmuster Issue256
troeprtek
Mar
0 102ne
uJ
OurusualmarkettrendforwinterisinplaceinnorthQueenslandwithamplesupplyofallcattle
descriptionsandlowercattlepricesTherecentannouncementofa350kgupperweightlimitforliveexportcattletoIndonesiawillfurtheraddtotheflushofslaughterstockinthemarketplaceAtpresentouronlyexportworksinthefarnorthSwiftrsquosabattoiratTownsvilleisbookedupformanyweeksaheadandthiswilllikelycontinueintotheSpringHopefullyastheyearwearsonandslaughtercattlesupplytightenspriceswillimproveOnthepositivesideforqualitycattleisthewidespreadrainoveralotofeasternAustraliaoverthelast6monthswhichupsthedemandforstorestockandreplacementbreeders
ThevalueoftheAustraliandollarhasbeenquitevolatileoverthelastfewmonthsbutmoreimportantlyforourindustryitfellbelow90centstotheUSdollarandatpresentishoveringinthemid80centareaIftheeconomicsituationwillallowittostaydownnear80centsitwillassistourexportersandhopefullyflowthroughtodomesticpricesForthefirst5monthsof2010ourbeefexportswereback9yearonyearat348883tonneswithJapanUSAandKorealeadingthewaySalesintoRussiaareshowingpromiseagainassuppliesfromArgentinaremaintight
Australiarsquosbeefexportswereback3in2009to927277tonnes775millionheadslaughteredback26onpreviousyearbutQueenslandrsquosexportsremainedsteadyat535568tonnesTheconcentrationoffeedlotsinsouth-eastQueenslandplusthepreferenceforgrowingoutheavyexportsteershasseenQueenslandsupply70ofallbeefsenttoJapanin2009(249000tonnes)
OntheCertifiedAustraliangrassfedbeeffrontwheelsareturningbehindthescenesondevelopingtherulesregulationsandaccreditationprocessCorevaluessuchasHGPandantibioticfreeandnograinfeedingplusMSAgradingwillunderpintheproduct
Australianfeedlotnumberswereback8inthefirstquarterof2010to711198headFeedercattlepricesgrainvaluesandslaughterratesarenotgivingfavourablereturnsalthoughAustraliahassecuredmarketaccessintotheEUforaccreditedcattlewithgoodvaluesandbestgridpricesatpresentareforcattlesuitableforthispremiumfeedlotmarketInFebruarythisyeartheUSAandAustraliawereauthorisedtosupplytheEUsnew20000tonneglobalhighqualitybeefquotaTheseEUmarketsarebyfarthemostlucrativeavailabletoaccreditedAustralianproducersatpresent
AquickflickthroughanyofourruralpresspublicationsoflatewillrevealthatwehavemorethantheusualnumberofcattlepropertiesonthemarketinnorthQueenslandMyreadingofthesituationisthatournumberoneenemy the cost price squeeze is biting hard combinedwithhighfinancialcostsboughtaboutbyinflatedpropertypricesoverthelastfewyears
Live export Asmentionedabovethe350kgweightrestrictionforcattledestinedforIndonesiaannouncedinearlyJunehasthrownabitofaspannerintothelivetradeconsidering
Indonesiatookaprox84ofourtotalliveexportslastyearThe350kglimitdecreehasbeeninexistencesince2008andhadneverbeenenforceduntilnowJustbeforethisproblemwehadthenewsofrestrictionsonourliveexportagentsobtainingimportpermitswhichhadsloweddownthetradeaswell
OfficiallytheIndonesianGovernmenthasexpressedthedesirefortheircountrytobecomemoreselfsufficientintheirownbeefsupplywhichishardtoimaginewiththeirpopulationndashlandareaequation
PricesquotedforsteersmidJunedeliveredtoTownsvilleare$160kgwithnoindividualweightsover340kgCattlearealsorequiredforaboatoutofKarumba
Interestinglyduring2009WesternAustraliawasthemainliveexportstatewith377ofshipments349NorthernTerritoryand21fromQueensland
ThereisnewsofaliveexportshipmentfromTownsvilledestinedforEgyptinlateAugustMalecattleonlywithratesforlightercattle(290ndash360kg)$173deliveredChartersTowersiftheymeetallthespecificationsThisboatwillalsotakecattleupto550kgliveweight($163kg)
Japan AttheendofMayafootandmouthdiseaseoutbreakwasannouncedinthesouthernislandsofthecountryTheoutbreakistheworstonrecordwithcaseson126farmsTherehasbeen285confirmedandsuspectedcasesandabout190000head(beefandpigs)culledortoabouttobedestroyedTheareaaffectedisanimportantWagyuproductionareaandhasresultedinthebanningofJapaneseexportsofthishighqualityproductInterestinglytheJapsexportapproximately680tonnesannuallyofWagyuproductwiththemainmarketsbeingVietnamHongKongandUSA
TodatethediseaseoutbreakhashadnoimpactondomesticmeatconsumptionandinternalGovernmentsourcesbelievethattheireconomyhasbeenpickingupsteadilyActualmeatpurchasesweresteadilydecliningduring2009buthaveshownsoftimprovementinto2010
AustralianbeefsalesthisyearfromJanuaryuntilendofMaywere2belowthesametimelastyearat144341tonnes
ThestrongvalueoftheYenagainsttheUS$hasassistedUSAbeefimportsandAprilimportvolumes(6302tonnes)were48higherthanApril2009figuresAllUSAproductmuststillbefromanimalsunder21monthsofage
TheJapaneseGovernmenthaslegislatedtocontinuethecurrentbeeftariff(385)to31March2011
Korea FootandmouthdiseasehasalsobeendetectedhereattheendofAprilandasyetitrsquoshadnoimpactonconsumerbeefpurchasesInearlyJunemoretalkswereheldinKoreaonprogressingafreetradeagreementbetweenournationsandfromallreportstherehasbeenpositiveprogress
Korearsquosdomesticcattleslaughterhasdeclined12inthe
Compu
dose Incre
asing Australian beef production
for
- 25 YEARS -
ManyhappyreturnsElanco congratulates the thousands of beef producers who have made Compudose Australiarsquos leading brand of implants But the returns are all yours
Compudosersquos proven 158 liveweight gain advantage1
helps Australian beef producers to turn off an additional 30000 tonnes of world-class beef every year And thatrsquos not including the benefits of turning off cattle earlier
For more information about how Compudose can increase the profitability of your beef business contact Elanco on 1800 226 324 or visit wwwelancocomau today
Youknowitworks1BF5870 2Based on Elanco sales data typical liveweight gains and cattle prices Elancoreg Compudosereg and the diagonal colour bar are trademarks of Eli Lilly and Company regCompudose is a trademark for Elancorsquos brand of oestradiol EAH1719
Northernmuster Issue25 7
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
5Northern muster Issue 25
ImagIne 3 year protection from Botulinum
from only one dose
Think how much time and money yoursquoll save
The most potent fastest acting and longest lasting vaccine on the market
Northernmuster Issue256
troeprtek
Mar
0 102ne
uJ
OurusualmarkettrendforwinterisinplaceinnorthQueenslandwithamplesupplyofallcattle
descriptionsandlowercattlepricesTherecentannouncementofa350kgupperweightlimitforliveexportcattletoIndonesiawillfurtheraddtotheflushofslaughterstockinthemarketplaceAtpresentouronlyexportworksinthefarnorthSwiftrsquosabattoiratTownsvilleisbookedupformanyweeksaheadandthiswilllikelycontinueintotheSpringHopefullyastheyearwearsonandslaughtercattlesupplytightenspriceswillimproveOnthepositivesideforqualitycattleisthewidespreadrainoveralotofeasternAustraliaoverthelast6monthswhichupsthedemandforstorestockandreplacementbreeders
ThevalueoftheAustraliandollarhasbeenquitevolatileoverthelastfewmonthsbutmoreimportantlyforourindustryitfellbelow90centstotheUSdollarandatpresentishoveringinthemid80centareaIftheeconomicsituationwillallowittostaydownnear80centsitwillassistourexportersandhopefullyflowthroughtodomesticpricesForthefirst5monthsof2010ourbeefexportswereback9yearonyearat348883tonneswithJapanUSAandKorealeadingthewaySalesintoRussiaareshowingpromiseagainassuppliesfromArgentinaremaintight
Australiarsquosbeefexportswereback3in2009to927277tonnes775millionheadslaughteredback26onpreviousyearbutQueenslandrsquosexportsremainedsteadyat535568tonnesTheconcentrationoffeedlotsinsouth-eastQueenslandplusthepreferenceforgrowingoutheavyexportsteershasseenQueenslandsupply70ofallbeefsenttoJapanin2009(249000tonnes)
OntheCertifiedAustraliangrassfedbeeffrontwheelsareturningbehindthescenesondevelopingtherulesregulationsandaccreditationprocessCorevaluessuchasHGPandantibioticfreeandnograinfeedingplusMSAgradingwillunderpintheproduct
Australianfeedlotnumberswereback8inthefirstquarterof2010to711198headFeedercattlepricesgrainvaluesandslaughterratesarenotgivingfavourablereturnsalthoughAustraliahassecuredmarketaccessintotheEUforaccreditedcattlewithgoodvaluesandbestgridpricesatpresentareforcattlesuitableforthispremiumfeedlotmarketInFebruarythisyeartheUSAandAustraliawereauthorisedtosupplytheEUsnew20000tonneglobalhighqualitybeefquotaTheseEUmarketsarebyfarthemostlucrativeavailabletoaccreditedAustralianproducersatpresent
AquickflickthroughanyofourruralpresspublicationsoflatewillrevealthatwehavemorethantheusualnumberofcattlepropertiesonthemarketinnorthQueenslandMyreadingofthesituationisthatournumberoneenemy the cost price squeeze is biting hard combinedwithhighfinancialcostsboughtaboutbyinflatedpropertypricesoverthelastfewyears
Live export Asmentionedabovethe350kgweightrestrictionforcattledestinedforIndonesiaannouncedinearlyJunehasthrownabitofaspannerintothelivetradeconsidering
Indonesiatookaprox84ofourtotalliveexportslastyearThe350kglimitdecreehasbeeninexistencesince2008andhadneverbeenenforceduntilnowJustbeforethisproblemwehadthenewsofrestrictionsonourliveexportagentsobtainingimportpermitswhichhadsloweddownthetradeaswell
OfficiallytheIndonesianGovernmenthasexpressedthedesirefortheircountrytobecomemoreselfsufficientintheirownbeefsupplywhichishardtoimaginewiththeirpopulationndashlandareaequation
PricesquotedforsteersmidJunedeliveredtoTownsvilleare$160kgwithnoindividualweightsover340kgCattlearealsorequiredforaboatoutofKarumba
Interestinglyduring2009WesternAustraliawasthemainliveexportstatewith377ofshipments349NorthernTerritoryand21fromQueensland
ThereisnewsofaliveexportshipmentfromTownsvilledestinedforEgyptinlateAugustMalecattleonlywithratesforlightercattle(290ndash360kg)$173deliveredChartersTowersiftheymeetallthespecificationsThisboatwillalsotakecattleupto550kgliveweight($163kg)
Japan AttheendofMayafootandmouthdiseaseoutbreakwasannouncedinthesouthernislandsofthecountryTheoutbreakistheworstonrecordwithcaseson126farmsTherehasbeen285confirmedandsuspectedcasesandabout190000head(beefandpigs)culledortoabouttobedestroyedTheareaaffectedisanimportantWagyuproductionareaandhasresultedinthebanningofJapaneseexportsofthishighqualityproductInterestinglytheJapsexportapproximately680tonnesannuallyofWagyuproductwiththemainmarketsbeingVietnamHongKongandUSA
TodatethediseaseoutbreakhashadnoimpactondomesticmeatconsumptionandinternalGovernmentsourcesbelievethattheireconomyhasbeenpickingupsteadilyActualmeatpurchasesweresteadilydecliningduring2009buthaveshownsoftimprovementinto2010
AustralianbeefsalesthisyearfromJanuaryuntilendofMaywere2belowthesametimelastyearat144341tonnes
ThestrongvalueoftheYenagainsttheUS$hasassistedUSAbeefimportsandAprilimportvolumes(6302tonnes)were48higherthanApril2009figuresAllUSAproductmuststillbefromanimalsunder21monthsofage
TheJapaneseGovernmenthaslegislatedtocontinuethecurrentbeeftariff(385)to31March2011
Korea FootandmouthdiseasehasalsobeendetectedhereattheendofAprilandasyetitrsquoshadnoimpactonconsumerbeefpurchasesInearlyJunemoretalkswereheldinKoreaonprogressingafreetradeagreementbetweenournationsandfromallreportstherehasbeenpositiveprogress
Korearsquosdomesticcattleslaughterhasdeclined12inthe
Compu
dose Incre
asing Australian beef production
for
- 25 YEARS -
ManyhappyreturnsElanco congratulates the thousands of beef producers who have made Compudose Australiarsquos leading brand of implants But the returns are all yours
Compudosersquos proven 158 liveweight gain advantage1
helps Australian beef producers to turn off an additional 30000 tonnes of world-class beef every year And thatrsquos not including the benefits of turning off cattle earlier
For more information about how Compudose can increase the profitability of your beef business contact Elanco on 1800 226 324 or visit wwwelancocomau today
Youknowitworks1BF5870 2Based on Elanco sales data typical liveweight gains and cattle prices Elancoreg Compudosereg and the diagonal colour bar are trademarks of Eli Lilly and Company regCompudose is a trademark for Elancorsquos brand of oestradiol EAH1719
Northernmuster Issue25 7
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Northernmuster Issue256
troeprtek
Mar
0 102ne
uJ
OurusualmarkettrendforwinterisinplaceinnorthQueenslandwithamplesupplyofallcattle
descriptionsandlowercattlepricesTherecentannouncementofa350kgupperweightlimitforliveexportcattletoIndonesiawillfurtheraddtotheflushofslaughterstockinthemarketplaceAtpresentouronlyexportworksinthefarnorthSwiftrsquosabattoiratTownsvilleisbookedupformanyweeksaheadandthiswilllikelycontinueintotheSpringHopefullyastheyearwearsonandslaughtercattlesupplytightenspriceswillimproveOnthepositivesideforqualitycattleisthewidespreadrainoveralotofeasternAustraliaoverthelast6monthswhichupsthedemandforstorestockandreplacementbreeders
ThevalueoftheAustraliandollarhasbeenquitevolatileoverthelastfewmonthsbutmoreimportantlyforourindustryitfellbelow90centstotheUSdollarandatpresentishoveringinthemid80centareaIftheeconomicsituationwillallowittostaydownnear80centsitwillassistourexportersandhopefullyflowthroughtodomesticpricesForthefirst5monthsof2010ourbeefexportswereback9yearonyearat348883tonneswithJapanUSAandKorealeadingthewaySalesintoRussiaareshowingpromiseagainassuppliesfromArgentinaremaintight
Australiarsquosbeefexportswereback3in2009to927277tonnes775millionheadslaughteredback26onpreviousyearbutQueenslandrsquosexportsremainedsteadyat535568tonnesTheconcentrationoffeedlotsinsouth-eastQueenslandplusthepreferenceforgrowingoutheavyexportsteershasseenQueenslandsupply70ofallbeefsenttoJapanin2009(249000tonnes)
OntheCertifiedAustraliangrassfedbeeffrontwheelsareturningbehindthescenesondevelopingtherulesregulationsandaccreditationprocessCorevaluessuchasHGPandantibioticfreeandnograinfeedingplusMSAgradingwillunderpintheproduct
Australianfeedlotnumberswereback8inthefirstquarterof2010to711198headFeedercattlepricesgrainvaluesandslaughterratesarenotgivingfavourablereturnsalthoughAustraliahassecuredmarketaccessintotheEUforaccreditedcattlewithgoodvaluesandbestgridpricesatpresentareforcattlesuitableforthispremiumfeedlotmarketInFebruarythisyeartheUSAandAustraliawereauthorisedtosupplytheEUsnew20000tonneglobalhighqualitybeefquotaTheseEUmarketsarebyfarthemostlucrativeavailabletoaccreditedAustralianproducersatpresent
AquickflickthroughanyofourruralpresspublicationsoflatewillrevealthatwehavemorethantheusualnumberofcattlepropertiesonthemarketinnorthQueenslandMyreadingofthesituationisthatournumberoneenemy the cost price squeeze is biting hard combinedwithhighfinancialcostsboughtaboutbyinflatedpropertypricesoverthelastfewyears
Live export Asmentionedabovethe350kgweightrestrictionforcattledestinedforIndonesiaannouncedinearlyJunehasthrownabitofaspannerintothelivetradeconsidering
Indonesiatookaprox84ofourtotalliveexportslastyearThe350kglimitdecreehasbeeninexistencesince2008andhadneverbeenenforceduntilnowJustbeforethisproblemwehadthenewsofrestrictionsonourliveexportagentsobtainingimportpermitswhichhadsloweddownthetradeaswell
OfficiallytheIndonesianGovernmenthasexpressedthedesirefortheircountrytobecomemoreselfsufficientintheirownbeefsupplywhichishardtoimaginewiththeirpopulationndashlandareaequation
PricesquotedforsteersmidJunedeliveredtoTownsvilleare$160kgwithnoindividualweightsover340kgCattlearealsorequiredforaboatoutofKarumba
Interestinglyduring2009WesternAustraliawasthemainliveexportstatewith377ofshipments349NorthernTerritoryand21fromQueensland
ThereisnewsofaliveexportshipmentfromTownsvilledestinedforEgyptinlateAugustMalecattleonlywithratesforlightercattle(290ndash360kg)$173deliveredChartersTowersiftheymeetallthespecificationsThisboatwillalsotakecattleupto550kgliveweight($163kg)
Japan AttheendofMayafootandmouthdiseaseoutbreakwasannouncedinthesouthernislandsofthecountryTheoutbreakistheworstonrecordwithcaseson126farmsTherehasbeen285confirmedandsuspectedcasesandabout190000head(beefandpigs)culledortoabouttobedestroyedTheareaaffectedisanimportantWagyuproductionareaandhasresultedinthebanningofJapaneseexportsofthishighqualityproductInterestinglytheJapsexportapproximately680tonnesannuallyofWagyuproductwiththemainmarketsbeingVietnamHongKongandUSA
TodatethediseaseoutbreakhashadnoimpactondomesticmeatconsumptionandinternalGovernmentsourcesbelievethattheireconomyhasbeenpickingupsteadilyActualmeatpurchasesweresteadilydecliningduring2009buthaveshownsoftimprovementinto2010
AustralianbeefsalesthisyearfromJanuaryuntilendofMaywere2belowthesametimelastyearat144341tonnes
ThestrongvalueoftheYenagainsttheUS$hasassistedUSAbeefimportsandAprilimportvolumes(6302tonnes)were48higherthanApril2009figuresAllUSAproductmuststillbefromanimalsunder21monthsofage
TheJapaneseGovernmenthaslegislatedtocontinuethecurrentbeeftariff(385)to31March2011
Korea FootandmouthdiseasehasalsobeendetectedhereattheendofAprilandasyetitrsquoshadnoimpactonconsumerbeefpurchasesInearlyJunemoretalkswereheldinKoreaonprogressingafreetradeagreementbetweenournationsandfromallreportstherehasbeenpositiveprogress
Korearsquosdomesticcattleslaughterhasdeclined12inthe
Compu
dose Incre
asing Australian beef production
for
- 25 YEARS -
ManyhappyreturnsElanco congratulates the thousands of beef producers who have made Compudose Australiarsquos leading brand of implants But the returns are all yours
Compudosersquos proven 158 liveweight gain advantage1
helps Australian beef producers to turn off an additional 30000 tonnes of world-class beef every year And thatrsquos not including the benefits of turning off cattle earlier
For more information about how Compudose can increase the profitability of your beef business contact Elanco on 1800 226 324 or visit wwwelancocomau today
Youknowitworks1BF5870 2Based on Elanco sales data typical liveweight gains and cattle prices Elancoreg Compudosereg and the diagonal colour bar are trademarks of Eli Lilly and Company regCompudose is a trademark for Elancorsquos brand of oestradiol EAH1719
Northernmuster Issue25 7
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Compu
dose Incre
asing Australian beef production
for
- 25 YEARS -
ManyhappyreturnsElanco congratulates the thousands of beef producers who have made Compudose Australiarsquos leading brand of implants But the returns are all yours
Compudosersquos proven 158 liveweight gain advantage1
helps Australian beef producers to turn off an additional 30000 tonnes of world-class beef every year And thatrsquos not including the benefits of turning off cattle earlier
For more information about how Compudose can increase the profitability of your beef business contact Elanco on 1800 226 324 or visit wwwelancocomau today
Youknowitworks1BF5870 2Based on Elanco sales data typical liveweight gains and cattle prices Elancoreg Compudosereg and the diagonal colour bar are trademarks of Eli Lilly and Company regCompudose is a trademark for Elancorsquos brand of oestradiol EAH1719
Northernmuster Issue25 7
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
firstfourmonthsof2010andimportshaverisenby16Ourbeefimportshavemainlybeenbladebrisketandmanufacturingbeef
AstrongerKoreanWonagainsttheUS$hasassistedtheUSbeefimportersandourshareofimportsisdownslightlyto58theUSA26andNewZealand15Koreandomesticbeefproducersin2009supplied47ofthetotalbeefmarket
USA TheglobalrecessionhasimpactedhardonthebeefmarketintheUSAwithhighunemploymentcheappricesfromotherproteinsandincreaseddairycowslaughterOurhighAustraliandollaroverthelast12monthshasimpactedonourexportersbutmanyUSeconomistsexpecttheireconomytogrowupto2in2010evenwithunemploymentstilluparound10TheUScattleherdiscontinuingtocontractbutUSbeefexportsareexpectedtoriseby10in2010TheirfoodservicesectorhasseenaslowriseindemandandwithinternaltightgrindingbeefsuppliesAustralianbeeftrimmingsand90CLproducthasseenasurgeinpriceswithsomelinesup30inpricefromlastyear
Australianexportsduring2009totaled251479tonnesup7onthepreviousyearGrassfedbeefcontinuedtodominateourexportstothismarketaccountingfor95ofthetotal
AtthisstagetheUSDAhasdecidedtonotgoaheadwithanationalidentificationschemeandisproposingtoonlytraceanimalsthatmovebetweenstates
Other Asia ChinaandotherregionaldestinationshaveseenrapidincomegrowthinrecentyearswithgrowingurbanpopulationwithincreasingdisposableincomedrivingbeefmarketdevelopmentOurexportstoChinain2009wereup97onthepreviousyearto5300tonnesup15toTaiwanto31300tonnesup134toHongKongat7500 tonnesWe have faced stiff competition from BrazilNZtheUSAandCanadaNewZealandhasnegotiated(2008)afreetradeagreementwithChinawhichgivesthemacompetitiveadvantageasAustraliapaysatariffvaryingbetween10ndash23dependingonproduct
Bernie English BeefExtensionOfficerKairiResearchStationAgrindashScienceQueenslandDEEDI
PlannedbreedingusingnewtechnologiesIdentifyingbreedingobjectivesisfundamentalto
plannedcattlebreedingSowhosetsbreedingobjectivesIfwearehonestwithourselveswewillanswerlsquoIdorsquothoughmaybenotunderthatheadingBreedingobjectivesarethecombinationofvariousselectioncriteriawiththeirrespectivelsquoweightingsrsquooremphasisthatwechoosetoplaceoneachcriteriaWemustgetitrightastheyfrequentlydirectlyaffectourherdandprofitabilityforthenext13ndash16yearsFurthermoreasweunderstandtheissuessurroundinglsquosettingbreedingobjectivesrsquoweappreciatethattheremaybeseverallsquobestrsquobullsatanindividualsaleSodonrsquotjustbidonabullbecausesomeoneofindustryrenownisbiddingonthatanimaltheymaynotunderstandormayhaveverydifferentobjectivestoyou
Thedecisionmadewhenchoosingabullsfortheherdthisyearwillinfluencetheenterpriseprofitabilityforthenext10to15yearsWhenbuyingbullsorselectingabullstouseintheherdproducersmaketheirchoicebylsquoweighinguprsquomanyfactorsincludingtheircurrentherdperformancetheenvironmentunderwhichtheherd is grazed and themarket specifications for theturn-offanimalsTheselectiondecisionisbasedonidentifyingwhichbullsfromthoseavailablewithrelevantinformationwillmeettheneedsoftheherdandenterprisewhilebalancingtheincrementaldifferencesinonetraitrelativetoanother
RecentlybeefproducershavehadincreasedopportunitytousenewtechnologiesadditionaltoBREEDPLANandaBullBreedingSoundness valuationintheirselectiondecisionsSelectionisfrequentlybasedonintuitivelsquofeelingsrsquoabouttherelativevalueofarangeoftraitsincludingfertilitygrowthstructurecarcaseand
temperamentwiththeproducercomparingalltherelativetraitsinalltheanimalsonoffertocometothechoiceofoneorafewbullsorheifersasthecasemaybeWhilstgeneticprogressisgreaterwhenfocusingonindividualtraitsinselectionthegreatestoverallandprofitableprogressinanyherdiswhenalltraitsareprogressedwithvaryingdegreesofemphasisatthesametime
TheprocessofcombininganumberofattributesortraitsintoasinglebreedingdecisionissettingabreedingobjectiveThebreedingobjectiveshouldbecomprisedofallthetraitsthataffectprofitplussomeindicationoftherelativeemphasiseachtraitshouldreceiveHencethereisnosinglebullinalsquomultivendorsalersquothatmeetstheneedsofallproducersandallmarkets
WithrespecttobullselectionthebullforyourherdmustFIRSTbefertileinordertopassonthedesirabletraitstotheprogenyToooftenIamtoldbybeefproducersthattheywantfertilebullsyettheypaytop$forthefattestbullonoffer
ReasoningandbeautycangetconfusedThereforethenumberonecriteriamustbeforabulltohavepassedaBullBreedingSoundnessEvaluationasevidencedbyanAustralianAssociationofCattleVeterinariancertificateThecertificateisyourpassportforgreaterconfidencethathecanpassonhisdesirablegenetictraitstoproduceadequateprogenyThedevelopmentofstructuralsoundnessgeneticdifferences(EBVs)forlegandhoofconformation(insomebreeds)willprovidemarginalbenefitsinafertilitytraitlargelyinfluencedbysemenqualityandmatingability
ManybeefproducershaveexperiencedthedefinitebenefitsaffordedthebullbuyerusingthevariousgrowthEBVsinadditiontocarcaseEBVsWithincreased
Northernmuster Issue258
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
attentiontomeatqualitymorerecentlygeneticdifferenceshavebeendevelopedfortemperamentfromeitherflightspeedmeasurescrushoryardtestscoresTheseareusedsimilartotheregularEBVswithapositivelargerdocilityEBVbeingmoredesirable(availablebylimitedbreeds)SinceanimaltemperamentisanimportantcomponentofmeatqualitythedocilityEBVisincorporatedwiththeDNAmarkersfortendernesstoproduceaTendernessEBVLikewiseformarblingtheultrasoundscanmeasuresforintramuscularfathavebeenavailableforsomeyearsHowevertheintroductionofDNAmarkersformarblingwillenablethecombinationoftheultrasoundmeasurewiththeDNAresulttoproduceasingleEBVforpercentintramuscularfat
ToestablishtheselectioncriteriastartplanningbyidentifyingtherelativeimpactofthevarioustraitsaffectingyourherdrsquosproductionrequirementsalongsidethemarketspecificationsAnexamplecouldbetolisttheselistedcriteriaacrossthetopofapagewithobjectiveslikelsquoincreasecalvingrateby10rsquolsquodecreasecalvingdifficultyby5rsquoincreaseweaningweightby20kglsquodecreaseP8fatdepthby5mmrsquoandsoonDowntheleftofthepagelistthevariousselectiontraitswithallhonestyandidentifywhichon-farmandmarkettraitsaremetbyyourselectioncriteriaThenacrosseachselectioncriteriaidentifyhoweachcontributestoyourbreedingherdperformancebysatisfyingeitheron-farmormarketspecifications
Amoredefinitivemethodforthisprocessistoobjectivelylink
bull the current herd performance for a range ofeconomicallyimportanttraits
bull the costs of production in the current herdbull the targetmarket specifications
bull the returns for the traits affectingmarketspecificationsand
bull the alternative siresdamswith relevant informationtoachievetheseselectiondecisions
Manybreedsocietieshaveproduced$IndexesfortargetmarketssuchaslsquoDomesticrsquolsquoJapOxrsquoandinothercaseshighmarblingmarketsTheseindexesrankavailableanimalswithgeneticproductivitycriteriaasthecriticalcomponentsandareappropriatetobalancedselectiondecisionAcomputerprogramcalledlsquoBreedObjectrsquoenablesanoutputasa$IndexcombiningvariousweightingsappliedtoarangeoftraitsThesingle$IndexisreportedasageneticdifferencebetweentheanimalstowhichitisappliedandquotedasanEstimatedBreedingValueAherdorregionspecific$Indexcanbeconsideredusingthisfacilityontheweb
NeverbeforehascattlebreedinghadsomanypositiveopportunitiesforselectionHoweverthebasiccriteriaremainthesamewiththeneedforbeefproducerstoremainobjectiveandfocussedontraitsthataremeasurableheritableandeconomicallyimportanttotheirbusiness
John Bertram PrincipalExtensionOfficer(Beef) Ph0746716700
Northernmuster Issue25 9
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
UnderstandingthevariousBREEDPLANEBVsBREEDPLANcurrentlyreportsEBVsforarangeofeconomicallyimportanttraitsThesetraitsinclude
Weight Fertilitycalving Carcase Other
Birthweight Scrotal size Eyemusclearea DocilityMilk Daystocalving Fatdepth Netfeedintake200daygrowth Gestationlength Retailbeefyield Structural400dayweight Calvingease Intramuscularfat soundness600dayweight Carcaseweight Flighttimematurecowwt Shearforce
TrialEBV
TheabovetraitscoverseveralareasofvitalimportancetobothbullbreedersandcommercialproducersThisallowsabalancedapproachtodesigningefficientbreedingprogramsforvariousenvironmentsandtotargetspecificmarkets
ItshouldbenotedthatEBVswillonlybeavailableifsufficientdatahasbeenrecordedforthattraitandassuchthefullrangeofEBVsmaynotbeavailableforeachparticularBreedSocietyAssociation
AlwayscompareanEBVtothecurrentbreedaverageEBVforthattrait
APercentileBandstableexistsforeachbreedThistableallowsassessmentofwhereeachanimalrsquosindividualtraitrankswithinthebreed
Calving ease EBVsareprovidedforcalvingeaseanimportantcharacteristicforcattleCalvingdifficultyhasanobviousnegativeimpactontheprofitabilityofaherdthroughincreasedcalfandheifermortalityslowerre-breedingperformanceandconsiderableadditionallabourandveterinaryexpenseEBVsfortraitsrelatedtocalvingeasearecalculatedfromthreemainsourcesofinformationndashcalvingdifficultyscorebirthweightandgestationlengthdataBREEDPLANproducestwocalvingeaseEBVsndashCalvingeasedirectandCalvingeasedaughters
(i)CalvingeasedirectCalvingease(DIR)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquoscalvestobebornunassistedfrom2yearoldheifersTheEBVsarereportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingEase(DIR)EBVsaremorefavourable
(ii)CalvingeasedaughtersCalvingease(DTRS)EBVsareestimatesofgeneticdifferencesintheabilityofasirersquosdaughterstocalveat2yearsofagewithoutassistanceTheEBVsarealsoreportedasdifferencesinthepercentageofunassistedcalvingsHighermorepositiveCalvingease(DTRS)EBVsaremorefavourable
Gestation length GestationlengthEBVsareestimatesofgeneticdifferencesbetweenanimalsinthenumberofdaysfromthedateofconceptiontothecalfbirthdateGestationlengthEBVsareexpressedindaysandarecalculatedfromthejoiningdateandbirthdaterecordsforcalvesconceivedbyeitherAIorhandmatingShortergestationlengthisgenerallyassociatedwithlighterbirthweightimprovedcalvingeaseandimprovedre-breedingperformanceamongdamsInadditioncalvesbornwithashortergestationlengthareoftenheavieratweaningduetomoredaysofgrowthConsequentlylowerormorenegativegestationlengthEBVsareconsideredtobemorefavourable
Birth weight BirthweightEBVsareestimatesofgeneticdifferencesbetweenanimalsincalfbirthweightCalfbirthweightisthebiggestgeneticcontributingfactorcausingcalvingdifficultyinheifersBirthweightEBVsareexpressedinkilograms(kgs)andarecalculatedbasedonweightsofcalvestakenatbirthSmallormoderatebirthweightEBVsaremorefavourable
PleasenotewhilstlowbirthweightEBVsarefavouredforcalvingeasetheyarealsogenerallyassociatedwithloweroverallgrowthpotentialConsequentlybirthweightandgrowthneedtobecarefullybalancedFortunatelyanimalscanbefoundthathavebothmoderatebirthweightEBVsandaboveaverageEBVsforlatergrowth
200 day milk 200daymilkEBVsareestimatesofananimalrsquosmaternaleffectonthe200dayweightofitscalfInthecaseofsiresthisestimatesthematernaleffectthathisdaughterswillhaveonthe200dayweightoftheirprogenyThe200daymilkEBVisexpressedaskilograms(kg)ofcalfliveweightat200days(ietheexpecteddifferenceintheweightofthecalfat200daysduetothematernaleffect(milk)ofthecow)The200daymilkEBViscalculatedbypartitioningthedifferenceinthe200dayweightofcalvesintogrowthandmilkcomponents
TheoptimumlevelofmilkproductionpotentialamongbeefcowsisdependentupontheproductionsystemandenvironmentinwhichthecowsarerunSelectionforincreasedmilkproductionmaybewarrantedwhencowsarerunundergoodnutritionalconditionsandcalvesaresoldasweanersHoweversomeenvironmentsmaynotsupporthighmilkingcows
Growth IngeneralwithallotherthingsbeingequalhighergrowthrateswillleadtohigherprofitabilityInmosteconomicanalysesconductedpositiveemphasisongrowthiswarrantedBREEDPLANcalculatesthreegrowthEBVsndash200daygrowth400dayweightand
Northernmuster Issue2510
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
600 day weight These EBVs are the best prediction of the animalrsquos ability to grow to weaning (200 day) yearling (400 day) and later ages (600 day) 200 day growth EBVs are therefore important to vealer breeders 400 day weight EBVs for yearling breeders and 600 day weight EBVs for breeders of heavy steers These EBVs are closely linked genetically but there is some scope to select for them individually
(i) 200 day growth 200 day growth EBVs are estimates of the genetic differences between animals in live weight at 200 days of age due to their genetics for growth 200 day growth EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 80 and 300 days of age This EBV is a measure of an animalrsquos early growth to weaning It is an important trait for breeders turning off animals as vealers or weaners Larger more positive 200 day growth EBVs are generally more favourable
(ii) 400 day weight 400 day weight EBVs are estimates of the genetic differences between animals in live weight at 400 days of age 400 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 301 and 500 days of age This EBV is an important trait for breeders turning off animals as yearlings Larger more positive 400 day weight EBVs are generally more favourable
(iii) 600 day weight 600 day weight EBVs are estimates of the genetic differences between animals in live weight at 600 days of age 600 day weight EBVs are expressed in kilograms (kg) and are calculated from the weights of calves taken between 501 and 900 days of age
This EBV is an important trait for breeders targeting the production of animals suited for heavy weight grass or grain fed markets Larger more positive 600 day weight EBVs are generally more favourable
Mature cow weight Mature cow weight EBVs are estimates of the genetic differences between cows in live weight at 5 years of age Mature cow weight EBVs are expressed in kilograms (kg) and are calculated from weights taken on the cow when her calfrsquos 200 day (weaning) weight is being measured
Mature cow weight EBVs are an indicator of
bull Cow feed requirements ndash in general lighter cows will tend to eat less and consequently have lower feed requirements and be less expensive to maintain
bull Cull cow values ndash the major determinant in the value of cull cows in a commercial herd will be live weight Consequently heavier cows may provide higher returns from the sale of cull cows
Scrotal size Scrotal size EBVs are estimates of the genetic differences between animals in scrotal circumference at 400 days of age Scrotal size EBVs are expressed in centimetres (cm) and are calculated from scrotal circumference measurements taken on bulls between 300 and 700 days of age Increased scrotal circumference is associated with increased semen production in bulls and earlier age at puberty of bull and heifer progeny Increased scrotal circumference also has a favourable relationship with days to calving such that bulls with larger scrotal circumference tend to have daughters with shorter days to calving Larger more positive scrotal size EBVs are generally more favourable
Days to calving Days to calving EBVs are estimates of genetic differences between animals in time from the start of the joining period (ie when the female is introduced to a bull) until subsequent calving Days to calving EBVs are expressed in days and are calculated from the joining records submitted for females
The days to calving EBV promotes those cows that calve earlier in the season compared to those that calve later while penalising those cows that do not calve Variation in days to calving is mainly due to differences in the time taken for females to conceive after the commencement of the joining period Lower or more negative days to calving EBVs are generally more favourable Females with shorter days to calving EBVs also tend to be those that show early puberty as heifers and return to oestrous earlier after calving
Carcase BREEDPLAN combines both live animal ultrasound scanning information with abattoir chiller carcase data to calculate EBVs that provide information regarding the genetic differences in carcase composition between animals in a standard 300 kg carcase Carcase EBVs provide a useful tool to assist breeders in targeting animals that meet market requirements
BREEDPLAN currently produces seven Carcase EBVs
bull Carcase weight bull Rib fat depth bull Rump fat depth bull Eye muscle area bull Intramuscular fat (marbling) bull Retail beef yield
bull Shear force (note trial EBV only)
(i) Carcase weight Carcase weight EBVs are estimates of the genetic differences between animals in hot standard carcase weight (as defined by AUSMEAT) at 650 days of age Carcase weight EBVs are expressed in kilograms (kg)
Northern muster Issue 25 11
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Larger more positive carcase weight EBVs are generally more favourable
Carcase weight should not be confused with yield The carcase weight EBV is an indication of the animalrsquos carcase weight and not an indication of the animalrsquos yield percentage
(ii) Eye muscle area (EMA) Eye muscle area EBVs are estimates of the genetic differences between animals in eye muscle area at 1213th rib site in a 300kg steer carcase EMA EBVs are expressed in square centimetres (cm2) Larger more positive EMA EBVs are generally more favourable
(iii) Rib fat Rib fat EBVs are estimates of the genetic differences between animals in fat depth at the 1213th rib site in a 300 kg steer carcase Rib fat EBVs are expressed in millimetres (mm) More positive or more negative rib fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals
(iv) Rump fat Rump fat EBVs are estimates of the genetic differences between animals in fat depth at the P8 rump site in a 300 kg steer carcase Rump fat EBVs are expressed in millimeters (mm)
More positive or more negative rump fat EBVs may be more favourable depending on your breeding goals relating to the finishing ability of your animals Stock with positive fat EBVs are likely to produce progeny that are fatter or more earlier maturing on average than stock with lower or negative fat EBVs Increasing fat depth leads to a decrease in retail beef yield however most market specifications require a minimum fat depth Breeders aiming to breed leaner higher yielding cattle may select for lower fat EBVs Breeders wishing to finish their animals earlier may tend to select animals with moderate fat EBVs Caution should be placed on selecting for extremely low fat EBVs for replacement females as this may indicate females that are more difficult to get in calf
Differences between rib fat EBVs and rump fat EBVs can indicate differences in fat distribution among animals
(v) Retail beef yield (RBY) Retail beef yield (RBY) EBVs are estimates of genetic differences between animals in boned out retail beef yield in a 300 kg steer carcase RBY EBVs are reported as differences in percentage () yield Larger more positive RBY EBVs are generally more favourable
(vi) Intramuscular fat (IMF) IMF EBVs are estimates of genetic differences between animals in intramuscular fat (marbling)
at the 1213 rib site in a 300kg carcase IMF EBVs are reported as differences in percentage () IMF Larger more positive IMF EBVs are generally more favourable
For markets where marbling is important (eg Japanese B2B3 market restaurant trade etc) higher IMF EBVs can contribute significantly to carcase value Recent research would suggest that 1 marble score is equivalent to approximately 15 intra-muscular fat so the variation shown between sires is not that large This relationship still needs more data to confirm the conversion from marble score to intra-muscular fat
(vii) Shear force Trial shear force EBVMs are estimates of genetic differences between animals in meat tenderness Trial shear force EBVMs are expressed as differences in the kilograms of shear force that are required to pull a mechanical blade through a piece of cooked meat and are calculated from shear force measurements (ie objective abattoir measures of meat tenderness) gene marker information and flight time records
Lower more negative trial shear force EBVMs are more favourable That is lower EBVs indicate that less shear force is required and hence the meat is more tender
Docility Docility EBVs are estimates of genetic differences between animals in temperament Docility EBVs are expressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie either lsquodocilersquo or lsquorestlessrsquo) and are calculated from temperament scores recorded on animals using either a crush or yard test when the animals are between 60 and 400 days of age (preferably at weaning)
Docility in cattle is the way cattle behave when being handled by humans or put in an unusual environment such as being separated from the mob in a small yard What we define as poor docility is a survival trait in the wild ndash fear of anything unusual and the desire to escape In domesticated cattle it is exhibited as flightiness Importantly docility is a highly heritable trait and so can be improved genetically Higher more positive Docility EBVs are more favourable
Net feed intake Feed efficiency is recognised as one of the most economically important production traits both in grazing enterprises and feedlot operations Research has shown that large variation exists in feed efficiency between animals and that a proportion of this variation is due to genetic differences BREEDPLAN produces two EBVs relating to feed efficiency ndash Trial net feed intake (post weaning) and trial net feed
Northern muster Issue 25 12
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
intake(feedlotfinishing)BothEBVsarecalculatedfrominformationcollectedinfeedefficiencytrialsorbymeasuringlevelsofthebloodhormoneIGF1WhilstthereisapositiverelationshipbetweenthetwoEBVssomeanimalsdorankdifferentlyforfeedefficiencyinthetwodifferentscenarios
Structural soundness SincecattlewerefirstdomesticatedithasbeenrecognisedthatanimalsshouldconformtocertainstructuralrequirementstoensurehighlevelsofproductionandadaptabilitytotheenvironmentWhenstructuralintegrityisnotmaintainedsubstantialfinanciallosscanoccurTheselossescouldbeduetosuchthingsascompletebullbreakdownbullsnotbeingabletocovertheallocatedcowsresultinginlowerconceptionratessteersbeingunabletofinishalongfeedingprogramorcowswithbadlystructureduddersbeingunabletoreartheircalvesproperly
TrialstructuralsoundnessEBVsareprovidedforfiveimportantstructuraltraits
bull Front feet angle (FA)
bull Front feet claw set (FC)
bull Rear feet angle (RA)
bull Rear leg hind view (RH)
bull Rear leg side view (RS)
TrialstructuralsoundnessEBVsarereportedasanestimateofgeneticdifferencesbetweenanimalsinthepercentageofprogenythatwillhaveadesirablescoreforaparticularstructuraltraitandarecalculatedfromstructuralscoresrecordedonanimalsbyanaccreditedscorerwhentheanimalsareyoungerthan750daysofage
HighertrialstructuralsoundnessEBVsaremorefavourableThatishigherEBVsindicateagreaterpercentageofprogenywithadesirablescoreforthatparticulartrait
Animalswithverylow(ienegative)EBVsforeachtraitareidentifiedwithanadditionalflagtoindicatethenatureoftheirstructuralfault
bull Front feet angle and rear feet angle EBVs areidentifiedwithaflagoflsquoSTrsquoindicatingincreasedprobabilityofsteepfeetangleandlsquoSHrsquoindicatingincreasedprobabilityofshallowfeetangle
bull Front feet claw set EBVs are identified with a flagoflsquoODrsquoindicatingincreasedprobabilityofopendivergentclawsandlsquoSCrsquoindicatingincreasedprobabilityofscissorclaws
bull Rear leg hind view EBVs are identified with a flagoflsquoBLrsquoindicatingincreasedprobabilityofbowleggedrearlegsandlsquoCHrsquoindicatingincreasedprobabilityofcowhockedrearlegs
bull Rear leg side view EBVs are identified with a flagoflsquoSRrsquoindicatingincreasedprobabilityofstraight
rearlegsandlsquoSIrsquoindicatingincreasedprobabilityofsicklehockedrearlegs
Flight time TrialflighttimeEBVsareestimatesofgeneticdifferencesbetweenanimalsintemperamentTrialflighttimeEBVsareexpressedasdifferencesinthenumberofsecondstakenforananimaltotravelapproximately20metresafterleavingthecrushandarecalculatedfromflighttimemeasurementsthathavebeenrecordedonanimalsusingspecialisedflighttimeequipment
FlighttimeisasimplecosteffectiveandeasytorecordobjectivemeasurementoftemperamentResearchhasshownthatinadditiontotheobviousbenefitsforeaseofhandlingandmanagementanimalswithlongerflighttime(iesuperiortemperament)alsohavesuperiormeattenderness
Higher(ielonger)trialflighttimeEBVsaremorefavourableThatishigherEBVsindicatealongertimetakentoexitthecrushandhencebettertemperament
Furtherinformationwwwbreedplanuneeduauwwwtbtsuneeduau
Alan Laing SeniorExtensionOfficer(Beef)DEEDI Ayr Ph0747205115
Northernmuster Issue25 13
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Fertilebullsarealsquomusthaversquotoincreaseyourherdrsquosprofitability
Conductinganybeefbusinessmeansthereisaneedtofocusonthecomponentsthatmost
directlyinfluenceprofitabilityThereislittlevalueinmeasuringeverytraitinsightorusingeverynewtechnologybeingplacedonthemarketiftheydonothaveamajorbenefitonthemarketoutcomeortheprofitabilityoftheenterprise
Giventhatyourbusinessisessentiallydrivenbythenumberofanimalsitcanselltheirweightandpricethenthereisaneedtofocusontherelativeareasthatwilldrivethatprofit
Onlyabout10ndash15ofthe30000plusreplacementbullsneededtofillrequirementsinnorthAustraliaeachyeararecurrentlysoldwithanyfertilitymeasurementdescribingtheirfunctionAbullwithpoorfertilityandorgenetictraitswillnotpassonhisdesirabletraitstosufficientprogeny
ThishastoimproveiftheindustryisgoingtocontinuetomakesignificantgeneticprogressNomatterwhattraitisinvolvedproducersmustknowcurrentherdperformanceandthattheirpurchasesthisyearandinthefuturearegoingtoimprovetheherdrsquos$returnsManyproducersgaugetheirherdfertilityperformanceonabrandingpercentageHoweverthepercentageofanimalscalvingwithina365dayinter-calvingintervalisoftensignificantlylessthanthefiguretypicallycalculatedfromthenumberofcalvesbrandedtototalnumberofbreedersForaproducerclaiminga75brandingfiguretherealityisoftenthatnomorethan50ndash55offemalesarecalvingwithina365-dayperiodndashthesamebasisasforinterestandtaxpaid
AustralianAssociationofCattleVeterinarianshavedeterminedthatfertilityistheabilityofabulltoachievebynaturalserviceapregnancyrateof60and90in50normallycyclingfemaleswithin3and9weeksofmatingrespectivelyThebeefindustryisfocusedonprofitabilityproducingacalffromeachbreederwithina365dayintervalThestudindustrymusthavethesamefocusiftheywishtoremainviableandrelevant
EarlierresearchhadshownfertilityisoftenfivetotentimesmoreimportantthanpricereceivedintermsofenterpriseprofitabilityGrowthcanbeuptodoublethataffectedbycarcaseattributesorpricereceivedThisisconsistentwithrecentreportsatMLABeefUpForumsindicatingthatpricereceived(centskg)frequentlyonlyaccountsforabout11ofprofitability in the enterprise So optimizing fertility
performanceisobviouslyabigissueforremoteandextensiveherds
How can fertility be improved ObjectiveinformationintheformofaBullBreedingSoundnessEvaluation(BBSE)intermsoflsquowhatweseersquo(phenotype)isessentialandBreedplanEBVsarenecessaryfromageneticperspective
TheBBSEwasdevelopedbyveterinarianstostandardisebullfertilitytestingandtoprovideaconsistentdescriptorofbullfertilityTheevaluationindicateswhetherabullhasmetasetofstandardsforkeyfertilitycomponentswhichindicatewhetherabullhasahighprobabilityofbeingfertileThecomponentsare
bull Scrotal circumference (cm) and tone orresilience
bull Physical examination for faults in the head legsjointsfeetsheathandpenis
bull Semen analysis for motility Morphology(orstructureoftheindividual
spermcells)and
bull Mating behaviourmating ability
ProducersmayoftendoareasonablejobintheirselectionofreplacementheifersbutundothatgoodworkbyselectingbullsonphenotypeandnotongeneticperformanceForexamplethemajorityofbullsareselectedonpropertyaccordingtolookslsquofleshinessrsquo straight backline and size that is oftenareflectionoftheanimalsrsquoageratherthanthetruegeneticworthoftheanimalanditsfertility
Therealityaboutgeneticsisthatthegeneticmake-upofthebullispassedonfromthesiretoprogenywhetherwemeasurethoseattributesorwhetherweignorethemThedifferenceisifwemeasurethemweknowwherewearegoingforthenext13ndash16yearsThelsquomickeyrsquoofunknowngeneticworthisgoingtoaffectyourherdfunctionandprofitabilitywellintothenextdecade
SelectionofbullsthatmeetminimumfertilitystandardshasbeenadifficultytomanybeefproducersforalongtimeForsometimelimitedreproductiveinformationhasbeenincludedinsalecataloguesmdashlsquolimitedrsquobecausemanyseedstockproducersonlysupplytheinformationthatbuyerseitheraskfororarepreparedtopayfororrelateananimaltosomejudgesshowmanship
TheAustralianAssociationofCattleVeterinarians(ACV)overseestheBBSEpracticeswithappropriatecertificationThecertificateprovidesastandardofassessmentforveterinaryevaluationofthevariousreproductivetraitsimportanttobeefproducersThisevaluationisconductedpriortosaleanddetailstheidentificationofthesiredateandlocationwheretheevaluationwasconductedtheassessments
Northernmuster Issue2514
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
madeandrelevantdiseaseinformation(asshownintheexampleinfigure1onpage19)Itispurelyanevaluationofarangeofmeasuresonthatdateonwhichitwasdoneanddoesnotprovideanyguaranteeorimplythenumberofcalvesthatthebullwillsireineithersingleormultiplesirematings
TheBBSEisnotageneticevaluationofreproductivetraitsbutanindicationoftheanimalrsquospresentreproductivefunctionHoweverthiscertificateisfarsuperiortolsquothelackofrsquoorlsquodistortedrsquoinformationthatisfrequentlyavailabletomanybullbuyersThisevaluationcanalsobeconductedonpropertyasanannualbulltestpriortomatingtoidentifyanybullthatisdeclininginfertility
InthesalecataloguesbullsellersareabletoprovideinassociationwitheachbullinthecatalogueorlistasummaryofthetestsconductedbytheexaminingveterinarianThisBBSEsummarywillbeintheformof
Scrotum Physical Semen Morphology Serving
355 P nt
P=OKundernaturalmating=Fail
Key 355 = Scrotal size or circumference in cm =Pass
na=Notapplicablent=Nottested
Theresultantcertificate(figure1)shouldbesoughtoutbybullbuyerswhenchoosingbetweenbullsastheyalsoprovidedetailsofaspectsoftheevaluationthatcannotbeseenintheliveanimalegpercentnormal spermatozoa and mating behavior details (ifconducted)
ManyofusareverycomfortableindiscussingthefeetlegandjointstructuresinanimalsandareveryconfidentinmakingaselectiondecisiontopurchaseorotherwiseoruseabullbasedonwhatweseeThefeaturesofabullthatareclearlyvisibleneedlittlereinforcingintheselectionprocessHoweverwhatwecannotsee(withoutamicroscope)oftenneedsalittleexplanation
Understanding the morphology myths MorphologyinaBBSEisbasicallythelsquostructurersquoofindividualspermcellsThestructuralattributesthatarenotclearlyvisible(orthatrequireamicroscopetoview)arefrequentlyjustasimportantifnotmoreimportantasfarasaffectingabullsfertility
SoletrsquosgobacktothebasicsofsemenproductionUnlikethefemalethathasherlsquoquotarsquoofeggsatthestartoflifethebulliscontinuouslyproducingsemenwithinthetubulesinthetesticlesThetesticlesareabout2degCcoolerthanbodytemperatureBetweentheheadbodyandtailof
Northernmuster Issue25 15
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
the epididymis there is a long tube for storage and maturation of the spermatozoa produced This production pipeline takes about 6ndash8 weeks from the start of production to when the semen is ready for ejaculation As semen is continually produced unused semen is excreted in the urine of all bulls
So can a bullrsquos fertility change How often do we think about what affect various treatments we apply to a bull have on his fertility For example when a bull is bought at a sale after being lsquostuffed full of feedrsquo (or more nicely put lsquoprepared for salersquo) and we then lsquolet him downrsquo (reduce his weight considerably) do we affect his fertility When a new bull has a fight with the current herd sires and is lame for a few days does that affect his fertility In fact any stress that we place on a bull either as part of our production system or our husbandry programme can affect the quality or structure of the spermatozoa in the continuous production of semen from within the testicles to each of the storage glands along the reproductive tract
Can we examine and categorise the semen produced by a bull Yes Many breeders will be aware that upon the collection of semen either by electro-ejaculation or rectal massage semen is examined crush-side for colour (no blood or urine staining allowed) and density of spermatozoa which is ranked on a 1 (clear to cloudy) to 5 (thick creamy colour) basis In addition when using low power magnification the amount of swirl or vigorous swimming motion of all the spermatozoa is scored on a 1 (no swirl generalised flickering of individual sperm only) to 5 (fast distinct swirl with continuous dark waves) basis Once completed the percentage of individual sperm that are swimming forward freely and independently is recorded This assessment is a compulsory measure of fertility to meet BBSE standards Based on extensive research the ACV has determined that a threshold of 30 progressively motile sperm is a pass on a BBSE In addition the sample must be free of large numbers of pus cells
The final evaluation of the semen is the percentage of individual spermatozoa that are structurally normal ndash the morphology To record the Normal sperm a sample of the semen collection is placed in a small tube with a special diluent and sent off to one of the accredited morphologists The morphologist will examine 100 individual spermatozoa and record all the abnormalities present
The morphologist report will detail the Normal sperm and the percentages of the following
abnormalities Proximal Cytoplasmic Droplets (PD) Mid-Piece Abnormalities (MP) Abnormal Tails and Loose Heads (TampH) Pyriform Heads (Py) Knobbed Acrosomes (KA) Vacuoles amp Teratoids (VampT) Swollen Acrosomes (SA) Maximum thresholds have been set for each of these categories based on their potential impact on the fertility of the bull eg PDndash20 MPndash30 TampHndash 30 Pyndash20 KAndash30 VampTndash20 and SAndash30
A frequent concern by producers is ndash why do subsequent samples from the same bull differ in Normal sperm As outlined previously the spermatozoa are continuously produced and are therefore subject to any stressors in the body (including rise in body temperature disease etc) until the time of ejaculation or excretion Because the stress or rise in body temperature may have been over an extended time it will have differing effects on the spermatozoa depending on where they were at in the production process on the occasion of the stresstemperature The morphology result is an indication of the quality of the semen at that point in time alone However if the Normal is high the bull has somewhat more of a buffer and can afford to decrease more in Normal as a result of stress than a bull that inherentlygenetically produces low Normal semen If on the first sample a bull produces a low Normal sperm then the bull should be retested between 42 and 56 days after the first test to gain a more representative sample of his true semen quality That of course is assuming that the bull is not suffering from any longer term adverse affects or ongoing stress
Therefore when a BBSE is conducted and the morphology results are presented there should always be an interpretation of the results in light of the bullrsquos vaccination history any prior stress imposed on the bull and the bullrsquos age and scrotal size The semen sample tells us something about the bullrsquos fertility when the sample was taken When associated with subsequent or previous samples we can gain a better understanding of the potential fertility of the bull
Are all the details in a BBSE always available Unfortunately NO Veterinarians often only do the components of the BBSE that the stud breeder requests Furthermore whilst some breed societies have supported the BBSE process in principal they have NOT gone so far as requiring a COMPLETE BBSE as a prerequisite for bulls to be included in a breed society endorsed sale or multi-vendor sale It is therefore essential for all bull buyers to seek
Northern muster Issue 25 16
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
UREA BASED PROTEIN amp PHOSPHOROUS MIXES amp MOLASSES MIXES
NQ Breeder Loose Mix
A balanced supplement high in urea suitable for use during the dry season
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 80 to 160gramsheadday
89555852328
3088378336311
LG Weaner Lick Loose Mix
Paddock supplement for weaners 150 -200kg to ensure maximum developmental growth
Analysis Equiv Crude Protein Crude Protein Min Phosphorous Min Salt Urea Equivalent Min Calcium Min Sulphur FibreEssential Trace Minerals Vitamins A D E
Daily Intake 130 to 255gramsheadday
494494
129339171209212657
CHARTERS TOWERS OFFICE Lot 6 Flinders Highway Charters Towers Qld 4820 Ph (07) 4787 7007 Fax (07) 4787 7008 Contact Scott Adams 0408 880 593
Craig Cook 0428 646 916 Goscelyn Smith 0408 773 157
MT GARNET OFFICE Lot 1 Battle Creek Mt Garnet Qld 4872 Ph (07) 4097 0081 Fax (07) 4097 0082 Contact Steve Flett 0429 970 081
ROMA OFFICE Lot 2 Kimbler Road Roma Qld 4455 Ph (07) 46204700 Fax (07) 46204799 Contact Doug Kriedemann 0437 257 967
Northernmuster Issue25 17
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
S O L I C I T O R SMobile 0418 765 793
Capitol Arcade 166 Byrnes Street Mareeba Q 4880
PO Box 53 Mareeba Q 4880
AUSTRALIA
bullensp Tel (07) 4092 2600bullensp Fax (07) 4092 2900
outandcitethecertificateinadvanceofpurchasingyourlsquonewinvestmentrsquoasitistoolateafterthebullhasbeenassignedtoyouintheauctionAlternativelybuyyourbullsfromvendorsthatclearlyandopenlyidentifytheBBSEstandardsoftheirbullsInterestinglysomestudsrequestthisinformationthemselveswhenbuyingabullssbutfailtoprovidethisservicetotheirclientsinturnThebestfeedbackyoucangivetoyourbullsupplieristoonlybuypayforbullswiththeessentialinformationratherthanmanykilogramsofgrainfromafeeder
Managing the new investment ndash the stnew sire -t
JustbecauseabullhasfourlegsaheadandasetoftesticlesitdoesnotnecessarilymeanheispermanentlyafunctionalbullHowheishandledwhatstressorshehasundergonethelevelofnutritionavailableandotherfactorscanallhaveastrongeffect(eitherpositiveornegative)ontheultimatefertilityandfunctionalityofthatbullandhisfertilityisdynamicmeaningitcanchangeduetotheseandotherstressorscircumstances
RelocationtoanewenvironmentsubjectingbulltonewviralandbacterialchallengesfightingandotherissuesassociatedwithestablishingnewsocialgroupscouldallhaveoftenunseenimpactsonsemenqualityTheseimpactsthenflowedthroughtofertilityintheherd
WherepossibleincomingbullsshouldbekeptwithanimalsofsimilarageandbullscomingfromverydifferentgeographicandclimaticenvironmentsshouldberelocatedmuchearlierthanthoseanimalsboughtfromasimilarenvironmenttoyourherdEvenwithingenotypessomebullsadapttomore
ressfulenvironmentsmorereadilythanothershesebeingmorelikelytohavetheirsemenquality
affected
Regardlessofwhetheryouhavesourcedbullsoutofthepaddockorthesaleringtheneedforsomeobjectivityinselectionremainsthesame
John Bertram PrincipalExtensionOfficer(Beef)DEEDIPh0746716700
AMG BUSINESS SOLUTIONS 210 Walsh Street
PO Box 150 MAREEBA QLD 4880 Phone (07) 4092 3070 Fax (07) 4092 1780
ldquoDriving Towards Successrdquo PROFESSIONALLY PREPARED TAX RETURNS bull Accounting and Tax Planning bull Business Support and Services
bull Building Service Authority Licence bull GST bull Self Managed Superannuation Funds
Northernmuster Issue2518
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
---------------------
---------------------
Figure1AnexampleofaBBSEcertificatethatyoundashthebullbuyer-candemandatthetimeofpurchasecouldbeasfollows
Bullville Veterinary Clinic
Address Veterinarians
Station Road PO Box 30 Indooroopilly Queensland 4068 Phone 07 33787944 Fax 07 38783559 Mobile 04 2747 8239 Email bullivetsemailcomau
Dr Maree Jones Dr Tom Smith Dr Bill Chappel
Report Bull Breeding Soundness Evaluation
This report was compiled exclusively for the use of the person to whom it is addressed No other person or corporation has any authority to make use of any or all of this report
This report is valid only when signed by the evaluating veterinarian and the bullrsquos owner or agent
Summary
To Mr Jack Shepherd Handsome Station Quilpe Queensland 4000
Place of examination Handsome Station Date 3 July 2010 Brand XXXX on offside Breed Santa Gertrudis Bull AgeNumbername Yr Month Charter Stowers 1965 1 08
Scrotum Physical Semen Morphology Serving355 nt
I hereby certify that information included in this report is in full accordance Veterinarian with the standards for evaluation and reporting bull breeding soundness Signature as published by the Australian Association of Cattle Veterinarians
I hereby certify that there has been no medical or surgical intervention of OwnerAgent congenital abnormalities of the listed bull(s) whether genetic or not to Signatureenable the above-mentioned standards to be met
Data recorded
Physical ServingCondition score 3 Serves 3Testes tone 3 Penis NormalPenis Normal MS function NormalFeet NormalLegs 3Leg joints NormalGait NormalHead NormalSemenDensity 4Mass activity 3Motility 80MorphologyNormal sperm 79
General comment
Northernmuster Issue25 19
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Measuringbreederperformancetoimproveperformanceandlongtermprofitability
Profitablebeefbusinessesofthefuturewillbethosethathavealreadystartedsomeyears
earliertoimprovetheinherentfertilityoftheirherdthroughmonitoringperformanceidentifyingproblemareasandmakingsoundmanagementdecisions
Forlongtermprofitbreederperformancecanbemaximisedifbull each cow conceives early in the mating period and
calveswithinanintervalofoneyearorlessbetweencalves
bull each cow successfully rears its calf to weaningbull each calf weanedmeets desired weight targets
Duetothelengthofthegestationperiodtheaveragecowmustre-conceivewithin12weeksofcalvingtoproducecalveswithinanintervalofoneyearorless
monthsPregnancy(approx284days) 93Calvingtocycling(6weeks) 135Cyclingtoconceiving(6weeks) 135Total 12months
Tomakeprogressthefirststepistomeasurereproductiveperformance
WhiletheultimatetestofacowrsquosperformanceisthatshesuccessfullyrearshercalftoweaningdeterminingproblemareasinisthiscomplexprocessismoredifficultThereanumberofreproductivemeasuresthatcanbeusedsomeofwhicharelistedinthefollowingtablesLevelorintensityofmanagementandreproductivehistorywilldeterminewhichofthesemeasuresaremostusefulandrelevanttotheindividualbusinessProducerpartnersintheValueinBeefprojecthavefoundthatdifferentmeasuresarerelevantunderdifferentmanagementscenarioswithspecificobjectivesandtargetsTheCashcowprojectaimstodeterminewhichmeasuresofbreedingherdperformancearebestrelatedtobusinessprofit(Fordyceperscomm)OutcomesfromthisprojectwillbedeliveredwhentheCashcowresearchiscompleted
Seasonalmatingandfoetalagingtogetherareparamountforaccuratemeasurementofbreederperformanceandforidentifyingareasforimprovement
IndividualNLISidentificationisnecessaryfor
trackinglifetimeperformanceFoetalaging12ndash13weeksafterbullshavebeenremovedwillidentifyallcurrentpregnanciesinseasonallymatedherdsWithcontinuousmatingfoetalagingwillnotpickupallpregnanciesplusitishardertodefinethematingperiodunlesslsquolatersquopregnantcowsareculled
Measuring heifer performance FromrecentCRCresearchweknowageandweightatpubertyarehighlyheritableThismeansgeneticprogresscanbemadeinthesetraits
OnceincalffirstcalfheifersexperiencetheenergydrainoflactatingwhilestillgrowingThisleadstoweightlossandfailuretore-conceiveHowevertherearethoseheiferswhicharemorefertileanddore-conceiveThesearetheheifersthatshouldbeproducingthebreedingfemalesofthefuture
Measuring mature cow performance BodyconditionattimeofcalvingisamajorfactordeterminingacowrsquosabilitytoconceivewhilelactatingWhiletheabilityofacowtoconceivewhilelactatingisinfluencedbynutritionandmatingmanagement(topreventdryseasonlactations)wenowknowthistraitishighlyheritableThismeansgeneticprogresscanbemadeinfemalebreedingcattleinthistrait
ThelinkbetweenmaturecowweightstheaveragepasturequantityandqualityandbodyconditionscoreisessentialwhenestablishingbreedingobjectivesRememberthoughthatthebullscontributethemosttogeneticprogressThisisduethenumberofcalvestheysireinalifetimeObjectiveselectionofkeytraitssuchasfertilityandgrowthisstronglyrecommended
WeaningpercentagecanbecalculatedinvariouswaysandthismakesitdifficulttocomparebetweenherdsForconsistencyitshouldbenumberofcalvesweanednumberofcowsmatedtoproducethosecalves(inclusiveofpregnancytestedemptyfemales)
CowswhichcalveregularlyarelikelytocontinuetodosoForsomeproducersknowingthepercentageofcowscalvingregularlyfromyeartoyearisofvalueinmeasuringherdperformanceandforidentifyingmothersoffuturebreeders
Foetalagingwillgiveaprofileoftheconceptionpattern
20 Northernmuster Issue25
Table1Measuringheiferperformance
Measure(heifers) Problemareas KeystrategiesAgeatjoiningageatcalving AgeWeightatpuberty Nutritiongenetics
Heiferconception Weightatpuberty Nutritiongeneticsdiseasecontrol
1stcalfheiferconception Conditionscoreatcalving Nutrition(incspikefeeding)geneticsWeightatcalving earlyweaningseasonalmating
Matingperiodcalvingspread Bodyconditionscoresubfertileandinfertilebulls Geneticsbullfertility(BBSE)season
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Northern muster Issue 25 21
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
22 Northernmuster Issue25
Table2Measuringmaturecowperformance
Measure(maturecows) Problemareas Keystrategies
Conception Conditionweightlactationalanoestrusbullsreproductivedisease
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Branding Foetalandcalflosses(diseasegeneticdefectscowfactorspredatorsstress)
Eliminateproblemcows(anddonrsquotbreedfromdaughters)PredatorcontrolDiseasecontrol
Weaning Allofabove Allofabove
Wetcowconception Lactationalanoestrusconditionweight Seasonalmatingnutritiongeneticsgenotype
Conceptionpattern(ieearlyconceptionsinmatingperiodspreadinconceptionbymonth)
Bulls(infertilesubfertile)reproductivediseasespoornutrition
Bullfertility(BBSE)vaccination(forvibrioetc)Adjustmenttomatingtimes
Intercalvinginterval(ICI) ConditionweightanoestrusBullsdisease
Nutritiongeneticsstrategicweaning
lossesconceptiontoweaning Foetalandcalflosses Vaccinationnutritiongenetics
BreederMaturecowweight Mature size vs pasture availability Breedingobjectivesmatchingenvironmentandanimalrequirements
andhencecalvingpatternThisisusefulfordeterminingthepercentageofcowsconceivingearlyinthematingperiodandwhilstlactatingThisinformationisusefulinseasonallymatedsituationswherefinetuningperformanceistheobjectiveReplacementheifersshouldbepreferentiallyselectedfromtheseearlyconceivingcowsandconverselycalvesfromlateconceivingcowsshouldbeconsideredcashflow
CowswithlongintercalvingintervalsarenotasprofitabletothebusinessascowswhichconceiveearlyinthematingperiodandwhilelactatingBythetimeempty(andlatepregnant)cowscanbeidentifiedandsoldtheyhaverepresentedacostinpastureconsumptionlickconsumptionandhandling
AcceptablelossesconceptiontoweaningwilldependonhowextensiveandtightlymanagedtheoperationisInextensivesituationssomemayviewgreaterthan10lossesasunacceptableDiseasesthatcauseconceptionandorpregnancyfailureincludevibriotrichomoniasisleptospirosispestivirusandneosporosis
Including weaner information OtherimportantmeasuresareweaningweightandpercentageofcalvesweanedatthefirstroundWeaningweightisacomponentofreducedageofturnoffnecessaryfortargetingpremiummarketsReducingageofturnoffinturnincreasestheimportanceoffertilityMostproducerswouldlikeasmanycalvesaspossibleweanedatthefirstroundAsignificantlsquospreadrsquoofweanersisnotasprofitableasatighterspreadA
higherpercentageofweanersatfirstroundgivescattleagoodstartforearlierturnoff
Measuring profitability AfertileherdmakesasignificantcontributiontowardslongtermprofitabilityIncreasedreproductiveratesenablesgreaterselectionpressureonreplacementfemalesandtherebygreateropportunityforgeneticprogressandincreasedprofitability
MarketingnonperformersresultsinshorttermprofitabilityToimprovelongtermprofitabilitythefertilityofaherdneedstoimprove
OnewayofmeasuringtheprofitabilityofaherdistocalculateGrossMarginperAdultEquivalent(GMAE)andGrossMarginBreederTheGMAEcanbecomparedagainstotherherdsandalsowithintheherd(forbothmalecattleandfemalecattle)DifferentclassesoragesoffemalecattlecanbecomparedTheGMsforgroupsoffemalesinthebreedingherdmayrangefrom$3000to$15000ormoreThisisultimatelydrivenbyfertilityassumingacceptablesurvivalratesTheweightofweanerproducedwillimpactonmaleGMandisalsorelatedtofemalefertility
TheBreedingEdgeworkshopcoversaspectsofthisarticleinmoredetailIfinterestedcontactyourlocalbeefofficer
Felicity Hamlyn-Hill BeefExtensionOfficerChartersTowersPh0747615151
Table3Measuringweanerperformance
Measure(weaners) Problemareas Keystrategies
Averageweaningweight(1stround2ndround)
TimeofcalvinglowinherentgrowthratesNutritionDryseasonlactations
geneticsseasonalmatingnutrition(incspikefeeding)
Proportionweaners1stround Calvingcreep(laterandlatercalvesduetoseasondiseaseandlongICI)
Nutritiongeneticsvaccinationseasonalmatingstrategicweaning
Weightofcalvesweanedcowsmated TimeofcalvinglowgrowthNutrition
Allofabove
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
23Northern muster Issue 25
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Not all intra-vaginal progesterone devices are the same
To order call 1800 044 839
156 g total progesterone in a slow release formulation (each of two replaceable pods contains 078 g progesterone)
To order call 1800 044 839
Cue-Mate is an intravaginal device containing 156 g total progesterone in a slow release formulation (each of two replaceable pods
To order call 1800 044 839
Since its introduction in 2004 Cue-Mate has become the estrus synchronization device of choice for a growing number of Australian farmers It delivers the reliable efficacy you count on while offering a design that maximizes retention cow comfort and animal safety
And Cue-Mate gives you options to purchase the ready-to-use device or to purchase the progesterone pods separately so that you donrsquot have to spend money on replacement devices
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Improveyourbottomlinewithselectionindexes
WithmanytraitstoconsiderwhendecidingonyournextbullpurchaseitisoftendifficulttoknowwhichtraitsyoushouldconcentrateontogetthebestreturnforyourdollarinrelationtotheperformanceoftheirprogenySelectionindexescanassistyouinthisselectiondecisionbyprovidinganEBVforprofitor$EBVallowingproducerstoselectthemostprofitablebreedingbullsfortheirspecificproductionsystemandtargetmarket
WiththecostpriceconstraintsthatfacemostproductionenterprisesitisessentialthatmanagementconsiderallavailableoptionstocontinuallyimprovetheefficiencyofthebusinesstomaintainandultimatelyimproveprofitabilityAsaproducerofbeefcattlegeneticimprovementofyourherdforeconomicallyimportanttraitsprovidesaverycosteffectiveoptionforachievingcontinualimprovementintheefficiencyofproductionofyourbusiness
WithbullsalesuponusagainforanotheryearitisimportantthatyouutiliseasmuchinformationaspossibletohelpselecttherightgeneticpackagetomakefavourablegeneticchangeforcommerciallyimportanttraitsGeneticchangeisbothpermanentandcumulativemeaningthatselectiondecisionsmadeinthebreedingherdtodaywillbereflectedinthegeneticmeritofthenextgenerationandbuiltuponfromselectiondecisionsinfuturegenerationsThegeneticmeritoftheherdcanofcoursebetakenhigherorlowerforoneormoretraitsdependingonthebreedinganimalsselectedObviouslytheaimwillbetocontinuallyimprovethegeneticmeritoftheherdforthosetraitsthathavethebesteconomicreturnbuthowdoyouidentifyanimalsthatpossessthesuperiorgeneticsandhowmuchemphasisshouldyouplaceontheindividualtraitstoensurethefutureherdprovidestheoptimalprofitabilityforyourproductionsystem
SelectionindexesprovideasimplesolutiontothiscomplexproblembyplacinganeconomicweightingoneachofthetraitsidentifiedasprofitdriversintheenterpriseandrelatingthisweightingtothegeneticmeritoftheanimalasdescribedbyitsrsquoEstimatedBreedingValues(EBVs)fortherespectivetraits TheAustralianbeefindustryusesasystemcalledBreedObjecttocombinetheeconomicweightingforeachtraitwiththegeneticinformationforeachanimaltoderiveasingleEBVforprofitTheEBVforprofitisexpressedindollars($)andprovidesanestimateofgeneticdifferencesbetweenanimalsinnetprofitabilitypercowjoinedforaparticularproductionsystemmarketscenario
TherearecurrentlytwelvebeefcattlebreedsinAustraliathathaveselectionindexesavailableThetablebelowshowsthesixbreedsandtheiravailableindexeswhichhaveatleastoneselectionindexthatissuitableforproductionsystemscommoninthenorthernbeefindustryFulldetailsoftherespectiveindexescanbeaccessedfromtheBREEDPLANwebsitehttpbreedplanuneeduauandfollowingthelinkslsquoTechnicalrsquolsquoBREEDPLANTipsheetsrsquoUnderstandingAustralianSelectionindexesrsquo
Breed Nameofselectionindex
Brahman 1 JapOx
SantaGertrudis 2 ExportproductionDomesticproduction
BelmontRed 2 Exportsteerdomesticsteer
Angus 4 SupermarketCAABJapB3NorthernTerminal
RedAngus 3 SupermarketVealerNorthernSteer
Charolais 3 DomesticsupermarketExportLiveexport
BreedsandtheiravailableselectionindexeswhichhaveatleastoneindexrelevanttoNorthernbeefproductionsystems
Theselectionindex$EBVcanbeusedinthesamewayasanyotherEBVforindividualtraitsThefollowingstepsarerecommendedwhenusingSelectionIndexesinselection
Identifytheindexwithinabreedthatbestmatchesyourproductionsystem
Comparetheanimalsavailableforselectiontothecurrentbreedaverageforthatindexandusethepercentilebandstabletodeterminehowtheyrankwithinthebreed(BothbreedaverageselectionindexvaluesandpercentilebandstablesareavailableinsalecataloguesandtheBREEDPLANwebsitebyfollowingthelinkslsquoTechnicalrsquolsquoBreedspecificdocumentsrsquoandselectingthebreedofinterest)
AssesstheindividualEBVsoftheanimalsselectedbytheindextobestmatchyourrequirements(animalswiththesame$EBVforanindexmayhavedifferentEBVsforindividualtraitsandselectioncanbefurtherrefinedbasedonspecifictraitsrequiringadditionalattentioninyourherd)UseselectionindexesinconjunctionwithothertraitsofeconomicimportancethatmaynotbedescribedbyEBVsegsemenqualitystructuralsoundnessandtemperament
AswithindividualtraitEBVstheselectionindex$EBVwillnormallybeusedtocompareanimalstoestimatetheadditionalgeneticbenefitthatwillonaveragebeprovidedintheprogenyofoneanimaloveranotherTheadvantageoftheselectionindex$EBVisthatitputsanactualdollarvalueonthatgeneticbenefitIfforexampleyouwerelookingtobuyaBrahmanbullforaselfreplacingherd
Northernmuster Issue2524
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
producinggrassfedJapOxinatropicalenvironmentandyouhadBullAwithaJapOxindexof+$30andBullBwithaJapOxindexof+$60tochoosefromyoucandoaquickcalculationontheadditionalprofitthatwillberealisedintheprogenyofonebullovertheotherThedifferenceinindexvaluebetweenthetwosiresis$30 Giventhathalfthegeneticscomefromthesireandhalfthegeneticsareinyourcowherdtheexpecteddifferenceinprofitabilityoftheprogenyfromthesebullsiscalculatedbytakinghalfthedifferenceintheirprofitability InthiscaseBullBrsquosprogenywillonaveragebe$15moreprofitablepercowmatedthanBullArsquosie(12x(BullBJapoxindexof$60ndashBullAJapoxindexof$30))IfBullBwerejoinedto200cowsinhisbreedinglifetimeie40cowsperyearfor5yearshewillprovideanadditional$3000inprofitcomparedtoBullAItisimportanttonotethattheadditionalprofitisacrosstheentireproductionchainandconsidersthelongtermbenefitgeneratedbythebullrsquosdaughtersinthebreedingherd(whenreferringtoaselfreplacingindex)
ForfurtherinformationinusingSelectionindexestoassistinyournextbreedingselectionpleasecontact
Philip Mann TropicalBeefTechnologyServices(TBTS)Ph0749276066emailphiliptbtsuneeduau
Is it time to upgrade the old
CATTLE TRUCK Call Ralph Lawson or Mike Steel
For a low cost finance package thatrsquos kind on your pocket Phone (07) 4766 4400
The Equipment amp Property Finance Specialists
Website wwwrlafinancecomau
CHANGE YOUR MSA COMPLIANCE IN A GENERATION
WHA ABOUT NEW OPPORTUNITIES FOR MEAT QUALITY WHAT TO DO ABOUT NEW OPPORTUNITIES FOR MEAT QUALITYuse SEMEN from the HIGHEST MARBLING Angus sires in Australia
with the right maturity pattern
Bryan Corrigan 0429 038 993 Lucinda Corrigan 0409 038 993 Peter Govan 0427 038 993 Sue Govan 02 6029 7078 Email rennyleabigpondcom Web wwwrennyleacomau
120 bulls at Rennylea Sale 26th August
Rennylea B77
Rennylea C574
Northernmuster Issue25 25
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
26 Northernmuster Issue25
DetailsonsixBrahmanbullpurchases
Weights(kg)
Birth 200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Daystocalving
Carcasewt(kg)
JapOxIndex($)
Damrsquoscalvinghistory
Brahman24 17 23 32
breedav38 0 03 12 20 20
B1 36 27 40 59 66 2 07 -74 31 $56 3calvesin3years
B2 32 23 31 49 54 -3 11 -92 27 $54 3calvesin3years
B3 49 32 46 51 66 1 - - 35 $29 6calvesin6years
B4 61 38 56 93 106 -1 - - 47 $55 6calvesin6years
B5 52 31 46 74 88 -1 - - 43 $42 2calvesin2years
B6 46 28 45 67 80 1 - - 39 $39 8calvesin9years
Bullselectiondecisionswithaprofitdrivenfocus
Thepr
followingaresomeexamplesofnorthernoducersusingbreedingobjectivestargeting
fertilityandpremiummarketsincludingMSAusingBreedplanandothermeasureddatatomakebullselectiondecisions
TheexamplesaresevendifferentherdsacrossfourbreedsFiveofthesehavedoneaBreedingEdgeWorkshopAllhavedecidedtomaketheirbreederherdsmoreprofitablebyselectingsireswithaprofitdrivenfocus
1 A Brahman bull breeding nucleus Thisherdhasabullbreedingnucleustobreedbullsfortheirowncommercialbreedersandsellsomebullstoregularclients
lsquoWearelookingforgoodfunctionalbullsthatwillenhancetheprofitabilityofourherdWehavefocussedonthreemaintraitsthateffectprofitabilityndashgrowthratefertilityandtemperamentThesireswepurchasedhavewellaboveaverage600daygrowthEBVshaveaquiettemperamentandarefromcowsthathaveaprovenabilitytoconceivewhilelactatingWeareintheearlyyearsofapplyinggreaterpressuretoandobjectivelymeasuringourbullbreedingnucleusbuttheresultsareencouragingrsquo
Thesebullshave
bull fertility (above average scrotal size EBV forthosemeasuredandgooddamreproductivehistory)andaboveaveragegrowth
bull good temperament
bull meet objectives to improve fertility growth andcombinationsforfatandstoremarkets
bull were affordable within budget
2 A crossbred commercial herd Thisbreedingherdhasobjectivestoimprovefertilityandtargetsforpremiumbeefandstoremarkets
lsquoWeunderstandbull a bulls affect on a cow herd genetically is far
greaterthanthecowsbull the difficulty of trying to get a calf every year
fromacowandhavingthatcalfbornattherighttimeofyear
bull the need to use the growing season withappropriategrowthgenetics
We have realized that we needed to seek bulls thatnotonlysuitedourcountrybuthadadocumentedhistoryWefocusedonanumberofthings
bull age of the bullrsquos mother at first calfbull how long the gestation period wasbull how many calves she had in her life so far
WeonlypickedbullsthatcamefromacowthathashadacalfeveryyearTocomplimentthiswematchedlowbirthweightswithhigh400and600daygrowthcomparedtobreedaverageWealsohadtheabilitytopickbullswithflightspeedtestedforquiettemperamentandhightickresistanceofwhichallprovedaccurateWealsoonlypickedbullswithhighsemenmorphologyObservingthesebullsduringmatingtheyareveryvirileandchasingcowsallthetimersquo
Thesebullshitthetargetsfor
bull above average growthbull above average scrotal size (for fertility)bull above average eye muscle area (for muscling
andcarcasetype)bull excellent dam reproductive recordsbull above minimum scrotal sizebull high sperm morphologybull high tick resistancebull excellent measured temperament ratin
3 A Droughtmaster bullock and bull breeder ThisherdtargetspremiumgrassfedbullockscullheifersandbreedsbullsforsaleTheherdhashighfertilityandstrivestomaintainfertilityandproducequalitybullocksheavierandyounger
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Northernmuster Issue25 27
DetailsonfourBelmontRedbullpurchases(EBVs)
Weights(kg)
Birth 200 400 600 Carcaseday day day
Milk(kg)
Scrotalsize(cm)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()
IMF
BelmontRed22 12 16 22 13
breedav4 06 15 -04 -05 05 01
BR1 7 30 48 64 - 2 15 28 -2 -25 19 -05
BR2 39 18 17 32 15 0 1 18 12 14 -02 0
BR3 34 17 20 27 14 -2 11 2 -05 -07 1 -03
BR4 34 18 21 25 15 1 19 23 -12 -18 13 -02
SelectedDroughtmasterbullsbothpurchasedandhomebred(EBVs)
Weights(kg) ScrotalMilk
Birth 200 400 600 Mat size(kg)
day day day cow (cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmaster-01 11 17 22 23 5 12
breedav13 07 0 01 06 0
DM1 14 19 35 59 - - 27 - 16 -17 -2 18 -1
DM2 - 16 24 35 - 7 17 - 21 -07 -08 13 0
DM3 - 13 22 29 - - 14 - 12 0 01 07 02
DM4 - 9 15 22 - 5 09 - 15 22 28 -03 07
DM5 - 24 30 42 - - 17 - 09 -05 -06 07 03
DM6 - 18 29 42 - - - - - - - - -
PurchasedDroughtmasterbull(EBVs)
Birth
Weights(kg)
200 400 600day day day
Matcow
Milk(kg)
Scrotalsize(cm)
Carcasewt
(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield
()IMF
Droughtmasterbreedav
-01 11 17 22 23 5 12 13 07 0 01 06 0
DM7 - 12 28 35 - - 11 - 21 108 24 0 07
DetailsonfourBelmontRedbullpurchases(Rawdatameasurements)
Age Calf ScrotalNoof Flight
firstcalf interval (cm) Tickscorecalves time
(mths) (days) 10809
Penscore
Rumpfat(mm)
Ribfat(mm)
EMA(sqcm)
IMF
BR1 26 4 486 40 Veryhigh 06 1 12 8 110 33
BR2 25 7 361 37 High 101 1 15 10 123 38
BR3 27 4 358 35 Veryhigh 067 1 10 6 100 44
BR4 23 6 364 37 Veryhigh 069 1 5 4 107 28
Bull DM1 is a high growth high scrotal size and higheyemuscleareabullthatisalsoveryattractive
BullsDM2andDM3areaboveaveragebullsforgrowth scrotal size and eye muscle area Bull DM3 isalsoaboveaverageinthecarcasetraitsofIMFrumpandribfat
BullDM4isbreedaverageforgrowthbuthighforthecarcasetraits
BullDM5isapurchasedbullthathasprovedhimselfintheherdandisleavinggoodperformingprogeny
BullDM6isapurchasedbullselectedontype
BREEDPLANmeasuredgrowthandrawdataonscrotalsize and carcase
Asapackagethesebullswillcontinuetoimproveweightforagefertilityofdaughtersandcarcaseparamaters
4 A commercial store steer and bullock herd Thisisasmallherdlookingtoimprovefertilitygrowthandtypeintheherd
ThisbullisaexampleofahighperformingbalancedpackageHehasbetterthanmoderategrowthcloseto breed average scrotal size and high in all carcasetraitsThisbullwillimprovegrowthandcarcases
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
28 Northernmuster Issue25
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRed 22 4 12 16 22 06breedav
BR5 26 5 17 28 39 17
DetailsonfourBelmontRedbulls
EBVsBirth
wt(kg)
Milk(kg)
Growth(kg) Scrotalsize(cm)
200day
400day
600day
BelmontRedbreedav 22 4 12 16 22 06
BR6 18 2 14 24 35 05
BR7 33 3 13 28 27 05
BR8 41 -1 18 36 40 09
BR9 46 3 22 38 46 11
Calvingeasedir
()
Calvingeasedtrs
()
Gestationlength(days)
Weights(kg)Milk(kg)
Scrotalsize(cm)
DaystocalvingBirth 200
day400day
600day
Matcow
Angusbreedav 0 04 -25 46 36 68 86 80 12 12 -25
A1 19 17 -43 27 41 83 100 83 10 28 -41
A2 -04 04 -39 43 44 80 110 81 19 2 -4
A3 01 21 -19 36 30 70 94 80 13 24 -51
A4 -15 1 -18 82 45 83 104 97 16 23 -58
Carcasewt(kg)
EMA(sqcm)
Ribfat(mm)
Rumpfat(mm)
Retailbeefyield()
IMFLong
fedCAABindex
Heavygrassfedsteer
index
Shortfeddomestic
index
Terminalindex
Angusbreedav
A1
A2
A3
A4
48
63
66
61
61
28
54
77
77
77
-01
09
1
27
22
-01
15
09
22
27
02
-03
03
-08
-07
08
25
22
39
38
86
$125
$135
$145
$146
71
$88
$97
$85
$91
63
$80
$81
$70
$80
63
$74
$85
$72
$80
5 A commercial herd of high grade Brahmans ProblemsidentifiedbythisproducerwerelowfertilityandordinarycarcaseperformanceSohedecidedtotryadifferentapproachtoimprovethesetraitsanduseadifferentbreedretainingenvironmentadaptionandmeasuredtraitsforgrowthandfertility
AbullwasselectedandthesecondcropofcalvesarenowweanedTheresultsaremorethanpleasingFurtherpurchasesofbullswithmeasuredtraitsareinthepipeline
This bull hashigh growth and scrotal size EBVs His damstartedyoungandhasanoutstandingfertilityrecord
6 A commercial herd mixture of high grade Brahmans and crossbreds This propertyrsquos owners realized howmuch further theycouldgoaheadwithcattleperformancebyusingthemeasuringtechnologyavailableincludingBREEDPLAN
Issueswiththeiroperationincludedlowfertilityandgrowthintheexistingherdandsomemarketsdemandingsoftercattle
Theydecidedtotrysomebullsofadifferentandlsquosofterrsquobreedwithaperformancerecordingbackgroundandwithfiguresavailable
ThesebullsareallabovebreedaverageforgrowthTheyareclosetoorabovebreedaverageforscrotalsize EBV and all out of cows that calve every year
Theywillcontributetoincreasedgrowthandfertility
7 A commercial high grade Brahman herd ThisherdproducesbullocksIssuesintheirproductionsystemincludelowweightforagenotenoughfatcoveratslaughterandlowfertilityinbreedersThereisalsoadesiretogetsomeproductionintothepremiummarketsthatrequirelessBosindicus
SomeAngusbullshavebeenusedoverBrahmancowsbutcheckinguphasrevealedtheyhavemostlybeenbeloworaroundbreedaverage
TheAngussireshavebeenfoundtobeavailableforAIandhavebeenshortlistedfortheirbalanceoftraitsandallinthehighendofperformance
BullA1has1807progenyanalysedonBREEDPLANAllthesebullshavehighlevelsoffertilitygrowthandcarcasetraitsTheywillbreedhighperformingcrossbreddaughtersforfuturebreedersandproducebullockstotargetpremiummarketssuchasMSA
Alan Laing SeniorExtensionOfficer(Beef)DEEDI AyrPh0747205115
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
29Northern muster Issue 25
Rumensin helps your cattle to digest theirfood more efficiently giving them moreenergy from every mouthful of pastureconsumed In fact Rumensin isscientifically-proven to
bull improve feed efficiency
bull improve growth rates
bull improve reproductive performance
bull and prevent coccidiosisdagger
If your molasses or lick doesnrsquot containRumensin then yoursquore not getting themost out of your investment in dry seasonsupplementation For more informationcontact your local feedmill or ElancoAnimal Health toll free on 1800 226 324
daggerRumensin is registered for improved feed efficiency and as an aid in the control of bloat in feedlot cattle for improved feed efficiency and weight gain andreproductive performance in heifers and as an aid in the prevention of coccidiosis caused by Eimeria zuernii and Eimeria bovis Elancoreg Rumensinreg andthe diagonal colour bar are trademarks of Eli Lilly and Company Rumensinreg is a trademark for Elancorsquos brand of monensin sodium EAH1721
More energy fromevery mouthful
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
A
ImprovingprofitabletraitsusingBREEDPLAN
herdbreedingobjectivecantargetfertilitygrowthandhighcarcasequality
UsingBREEDPLANover12yearsthesetargetshavebeenachievedinacarefullyselectedbostaurusherdAherdprofilehasbeencreatedover900recordedcowswithaboveaveragegrowthhighfertilityandtop5marblingandeyemusclearea
AtoolfornorthernbreederstoimprovecarcasequalityistouseAIItisimportantwhenusingAItoimprovecarcasetraitstoaccessMSAthatthebiggestprofitdriverfertilityisnotcompromised
RecentresearchcomingoutofBeefCRCProjectsinnorthernandsouthernAustraliahaveshowntheimportanceofgeneticfattomaintainfertility
InnorthernAustraliawheretherehasbeenalotofcrossbreedingwithCharolaisandBrahmansimportantEBVstoselectforarebullswithpositivescrotal size positive fat and a more moderatematuritypattern
ThenextstepistoaddincarcaseimprovementThereareeliteAIbullsthatareinthetop5forEMAandtop1formarbling
Examplesoftheseare
Birthwt
600daywt
Daystocalving
Ribfat
IMF EMA
Breedaverage
46 86 -25 -01 08 28
NORB77 +38 +111
NORC574 +17 +104
-50
-41
+28
+18
+32
+26
+91
+69
Bryan Corrigan RennyleaAngusStud NSWPh0260202032
R
Wormsandmeatsheepinthetropics
earingsheepinthetropicshassomeadvantagesover rearing sheep in the pastoral zone One
advantageistheabundanceofgoodqualityfeedButthisadvantageneedstobetemperedwithanunderstandingthattheconditionsthatfavourgoodpasturegrowtharethesameconditionsthatfavourthecyclingofworminfectionsWhilemeatsheeparetoutedasbeingmoreresistanttoworminfectionstheresultsfromourtestinglaboratorywouldindicateotherwiseWormsproducegastrointestinaldisturbancesinthehostandconsequentlymalnutritionAhighplaneofnutritionwilldelaytheinevitableandthismaybethereasonwhymeatsheepseemtobemoreresistanttoworminfections
Barberspoleisthepredominantwormparasiteofmeatsheepinthetropics
OtherimportantwormsthescourwormssuchastheblackscourwormandthenodulewormareoftenpresentScourwormssuppressappetiteandsheeplooseweight
Worm management bull Use WormTest every 4 weeks in the wet seasonbull Develop a fast rotational grazing system during
thewetsummermonthsforimprovedwormcontrol
bull Always follow a drench with a WormTest 10 dayslater
bull Condition score sheep for weight loss caused byscourworms
Barberrsquos pole worms
SomefactsaboutthiswormIt
bull kills sheep
bull kills sheep quickly
bull kills sheep often without any warning
Barberrsquospolewormsliveintheabomasum(4thstomach)andsuckbloodfromtheliningofthewallresultinginanaemiaTheadultwormseachsuckaround005mlofbloodperdayAburdenof1000wormscanremoveabout50mlofbloodperdayWorkon6ofbodyweighttoidentifythevolumeofbloodinaweanerTheimmaturewormburdenalsosucksblood
Signsofaheavyinfectionincludealackofstaminapalegumsandlowerinnereyelidbottle-jawandconstipation
The goal is to recognize any build-up in worm numbersthroughregularvisualinspectionsandlaboratorytestingandtreatsheepbeforeproductivityiscompromised
Worm testing Weeklyvisualinspectionofsheepforanysignsofinfectioncombinedwithlaboratorytestingforthelevelandnatureoftheparasiteburdenwillhelpproducerstomakethebetterdecisionsaboutthetimingofdrenchtreatments
wwwwormbosscomaugrow
Therewillbemoreworm-relatedinformationnextissue
WormTest laboratory AgriScienceAnimalResearchInstitutePh0733629447 or132523
Northernmuster Issue2530
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Northernmuster Issue25 31
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532
Focus on your heifers for a profitable future
Therersquos no doubt heifers are the most important asset for your herdrsquos future Setting them up now will guarantee productivity and profitability down the track With Pfizer s Heifer Packs you can give your heifers the head start they need Therersquos a pack for every stage of your heifer management plan from weaner to first calf to maximise joining calving and weaning rates
For more information on the Pfizer Heifer Packs talk to your rural reseller or call your Pfizer Beef Product Specialist on 1800 335 374
$
Weaner Pack Heifer Pack Heifer Plus Pack
Dectomaxreg Injectable
Longrangereg
Ultravacreg 5in1
Dectomaxreg Injectable
Ultravacreg Botulinum
Vibrovaxreg
Dectomaxreg Injectable
Ultravacreg Botulinum
Pestigardreg
Leptoshieldreg Ultravacreg 7in1
Vibrovaxreg
Pfizer Australia Pty Ltd 38ndash42 Wharf Road West Ryde NSW 2114 ABN 50 008 422 348 reg Registered Trademark of Pfizer Australia AM077 HampT PAL0040NM
wwwpfizeranimalhealthcomauBeef Health Performance Growth
Northernmuster Issue2532