Beef Carcass Education by Beef Carcass Education by Participating in the Juab County Participating in the Juab County

Fair Steer Carcass ContestFair Steer Carcass Contest

By Jeffrey E BanksBy Jeffrey E BanksUtah State University Utah State University

ExtensionExtensionAgriculture/Youth AgentAgriculture/Youth Agent

Juab CountyJuab County

The purpose of the carcass The purpose of the carcass contest is to assist youth and contest is to assist youth and

adults in:adults in:

Producing high quality carcassesProducing high quality carcasses

Producing high yielding carcassesProducing high yielding carcasses

Promoting a desirable, marketable productPromoting a desirable, marketable product

Which one would you Which one would you choose?choose?

Beef Grading and Beef Grading and EvaluationEvaluation

Photo courtesy of the American Meat Science Association

Carcass Quality GradingCarcass Quality Grading

1 Assumes that firmness of lean is completely developed with the degree of marbling and that the carcass is not a “dark cutter.”

2 Maturity increases from the left to right (A through E).

3 The A maturity portion of the figure is the only portion applicable to bullock carcasses. Photo courtesy of the American Meat Science Association

Photos courtesy of the American

Meat Science Association

Photos courtesy of the American

Meat Science Association

The Yield Grades are based on the following mathematical (regression) equation:

Yield Grade = 2.50 + (2.50 x adjusted fat thickness, in.) + (0.20 x % kidney, pelvic, and heart fat) + (0.0038 x hot carcass weight, lb.) – (0.32 x area of ribeye, sq. in.)

USDA Yield Grades

Photos courtesy of

the American

Meat Science

Association

Average Ribeye/Hot Carcass Weight

Measuring Fat Thickness

External fat thickness is measured at the 12th/13th rib interface, perpendicular to the outside surface of the carcass at a point ¾ of the length of the ribeye from its chine-bone end.

Measuring Ribeye Area

A grid calibrated in 0.1 sq. in. units may be used to measure the area of the ribeye muscle at the 12th/13th rib interface

Photos courtesy of the American Meat Science Association

Photos courtesy of the American Meat Science Association

Photos courtesy of the American Meat Science

Association

Photos courtesy of the American Meat Science

Association

Alberta Alberta FeedlotFeedlot

Deseret Meat Packing PlantDeseret Meat Packing Plant

Starting Weight 885Show Weight 1175Show Place Champion ClassCarcass Weight 715USDA Grade C-Backfat (in.) 0.40KPH (%) 2.5Ribeye (in.) 11.5Ribeye Car/Wt 12.5Yield Grade 3.04

Clayton RindlisbacherClayton Rindlisbacher

Starting Weight 928Show Weight 1238Show Place Red Carcass Weight 763USDA Grade SBackfat (in.) 0.20KPH (%) 2.0Ribeye (in.) 12.6Ribeye Car/Wt 13.1Yield Grade 2.27

Nicole KayNicole Kay

Starting Weight 850Show Weight 1105Show Place RedCarcass Weight 655USDA Grade CBackfat (in.) 0.20KPH (%) 2.0Ribeye (in.) 11.9Ribeye Car/Wt 11.6Yield Grade 2.08

Morgan PetersonMorgan Peterson

Starting Weight 880Show Weight 1249Show Place Grand ChampionCarcass Weight 827USDA Grade S+Backfat (in.) 0.35KPH (%) 2.5Ribeye (in.) 15.9Ribeye Car/Wt 13.7Yield Grade 1.93

Taelor McPhersonTaelor McPherson

2006 JUAB COUNTY FAIR BEEF CARCASS CONTEST2006 JUAB COUNTY FAIR BEEF CARCASS CONTEST(148 days on (148 days on feed)feed)

NameNameTag #Tag # Start wtStart wt Show wtShow wt

Show Show placeplace

Carcass Carcass wtwt

Quality Quality gradegrade

Back Back FatFat

KPH %KPH %Ribeye Ribeye

areaareaRibeye Ribeye car/wtcar/wt

Yield Yield GradeGrade

Carc Carc pointspoints

Mtg Mtg PointsPoints

Total Total PointsPoints

RankRank

Clayton Clayton RindlishbacherRindlishbacher 138138 885885 11751175 CCCC 715715 C-C- 0.400.40 2.52.5 11.511.5 12.512.5 3.043.04 83.983.9 66 89.989.9   

Samantha PetersonSamantha Peterson 141141 963963 12781278 BB 827827 C C 0.300.30 2.52.5 11.811.8 13.713.7 3.123.12 83.183.1 66 89.189.1   

Malachi PetersonMalachi Peterson 142142 770770 11491149 RR 687687 C C 0.250.25 2.52.5 12.112.1 11.911.9 2.362.36 90.790.7 33 93.793.7   

Morgan PetersonMorgan Peterson 144144 850850 11051105 RR 655655 C C 0.200.20 2.02.0 11.911.9 11.611.6 2.082.08 93.593.5 33 96.596.5 33

Savanna PetersonSavanna Peterson 148148 847847 11461146 RR 680680 C-C- 0.400.40 3.03.0 11.411.4 11.911.9 3.043.04 83.983.9 66 89.989.9   

Megan PetersonMegan Peterson 149149 847847 11501150 RR 742742 C C 0.400.40 3.03.0 12.812.8 12.812.8 2.822.82 86.186.1 00 86.186.1   

McKayla GarrettMcKayla Garrett 151151 10001000 13291329 BB 882882 C C 0.650.65 3.03.0 14.814.8 14.314.3 3.343.34 80.980.9 66 86.986.9   

Ashley GarrettAshley Garrett 153153 926926 13711371 BB 840840 C-C- 0.400.40 2.52.5 13.313.3 1414 2.942.94 84.984.9 66 90.990.9   

JaBoe GarrettJaBoe Garrett 155155 894894 13051305 CCCC 780780 C-C- 0.400.40 2.52.5 14.714.7 13.113.1 2.262.26 91.791.7 66 97.797.7 22

Kyler McPhersonKyler McPherson 157157 886886 12721272 BB 833833 C-C- 0.350.35 2.52.5 13.713.7 13.713.7 2.662.66 87.787.7 66 93.793.7   

Andrea McPhersonAndrea McPherson 158158 993993 12991299 BB 789789 C C 0.600.60 3.03.0 12.312.3 13.413.4 3.663.66 77.777.7 33 80.780.7   

Tyler HowardTyler Howard 161161 891891 12381238 BB 730730 C-C- 0.300.30 2.52.5 12.512.5 12.512.5 2.522.52 89.189.1 66 95.195.1 44

Jordon HowardJordon Howard 162162 885885 12171217 RR 708708 C-C- 0.400.40 2.52.5 11.111.1 12.212.2 3.143.14 82.982.9 33 85.985.9   

Chandra MorganChandra Morgan 166166 871871 12041204 BB 777777 C-C- 0.600.60 3.03.0 12.812.8 13.113.1 3.463.46 79.779.7 33 8.278.27   

Wyatt OstlerWyatt Ostler 168168 10271027 14711471 BB 895895 C-C- 0.450.45 3.03.0 12.112.1 14.614.6 3.753.75 76.876.8 33 79.879.8   

Dixon WinnDixon Winn 179179 891891 11931193 RR 758758 C-C- 0.250.25 2.52.5 14.814.8 12.812.8 1.771.77 96.696.6 66 102.6102.6 11

Shamri WrightShamri Wright 181181 920920 12421242 CCCC 838838 C+C+ 1.051.05 3.03.0 10.210.2 1414 5.655.65 57.857.8 33 60.860.8   

Cole WrightCole Wright 182182 860860 12271227 RCRC 800800 C-C- 0.500.50 3.03.0 13.713.7 13.413.4 3.013.01 84.284.2 33 87.287.2   

Ethan McPhersonEthan McPherson 185185 898898 13351335 BB 880880 C-C- 0.450.45 3.03.0 14.714.7 14.314.3 2.872.87 85.685.6 66 91.691.6   

Alexa NielsonAlexa Nielson 190190 976976 13701370 CCCC 878878 C-C- 0.350.35 2.52.5 12.912.9 14.314.3 3.083.08 83.583.5 33 86.586.5   

Lyndsey PalmerLyndsey Palmer 191191 845845 12691269 RR 772772 C-C- 0.450.45 3.03.0 11.511.5 13.113.1 3.483.48 79.579.5 66 85.585.5   

Josh PalmerJosh Palmer 192192 869869 13311331 BB 773773 C C 0.150.15 2.02.0 12.112.1 13.113.1 2.342.34 90.990.9 33 93.993.9 55

JUAB COUNTY FAIR BEEF CARCASS CONTEST EVALUATION

YearYear ##HeadHead

Days-Days-on on

FeedFeed

% % Choice-Choice-

or higheror higher

Yield Yield GradeGrade

Hot Hot Carcass Carcass WeightWeight

Rib Rib eyeeye

Rib eyeRib eyeCarcass Carcass

wt.wt.

BackfatBackfatThicknessThickness

KPH KPH %%

CarcassCarcassRate of Rate of GainGain

Live Live RateRate

of Gainof Gain

19961996 2323 141141 56.5256.52 2.302.30 693.00693.00 12.5612.56 12.112.1 .27.27 2.522.52 2.152.15 2.842.84

19971997 2020 142142 50.0050.00 2.512.51 726.15726.15 12.2912.29 12.512.5 .29.29 2.332.33 2.192.19 3.003.00

19981998 2323 148148 43.4843.48 2.382.38 693.43693.43 12.0 12.0 12.112.1 .25.25 2.332.33 2.052.05 2.802.80

19991999 2828 147147 25.025.0 2.312.31 718.14718.14 12.5112.51 12.412.4 .29.29 1.821.82 2.112.11 2.712.71

20002000 2929 142142 31.0331.03 2.542.54 724.72724.72 12.2712.27 12.512.5 .29.29 2.382.38 2.222.22 2.962.96

20012001 2929 140140 41.3841.38 2.562.56 730.55730.55 12.5412.54 12.512.5 .33.33 2.382.38 2.342.34 2.942.94

20022002 3333 140140 36.3636.36 2.262.26 719.88719.88 13.1013.10 12.512.5 .29.29 2.392.39 2.332.33 3.073.07

20032003 3838 134134 55.2655.26 2.322.32 717.87717.87 13.0713.07 12.512.5 .34.34 2.642.64 2.282.28 3.013.01

20042004 4141 146146 51.2251.22 2.522.52 752.66752.66 13.2413.24 12.812.8 .33.33 2.732.73 2.002.00 2.452.45

20052005 3535 140140 48.5748.57 2.542.54 772.11772.11 12.9712.97 13.113.1 .28.28 2.722.72 2.032.03 2.552.55

20062006 4040 148148 55.0055.00 2.672.67 768.18768.18 13.0113.01 13.113.1 .36.36 2.592.59 2.022.02 2.372.37

1976-2006 Carcass Contest 1976-2006 Carcass Contest SummarySummary

873 Steers entered873 Steers entered

Approximately 90% of steer carcasses are sold Approximately 90% of steer carcasses are sold locallylocally

Over 800 youth received carcass educationOver 800 youth received carcass education

Over 1700 adults received carcass educationOver 1700 adults received carcass education

Questions?Questions?Photo courtesy of the American

Meat Science Association