Care & Management of Breeding Bucks · BCS 1 Easy to see & feel, sharp Easy to feel & can feel...
Transcript of Care & Management of Breeding Bucks · BCS 1 Easy to see & feel, sharp Easy to feel & can feel...
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Care & Management of
Breeding Bucks
Chris Duemler, DVM
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Dr. Chris Duemler
• Education: B.S. University of Missouri - Columbia D.V.M. UM Columbia
• Career: 34 years
Brodhead Veterinary Medical Center
• Emphasis: Goats, cattle, horses & pigs
• Owns: Goats, dogs & cats
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Selection
Production vs Type
Production = Milk, Butterfat & Protein
Type = Longevity
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ADGA Genetics
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Genetics
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ADGA Genetics
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ADGA Production Evaluation
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ADGA Type Evaluation
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ADGA Linear Appraisal History
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Value of AI?
Data available for
type & milk
production of
offspring
Bio-security
Investment in wide
range of genetics
Produce future
sires for herd
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Breeding Soundness Exam
Palpate testicles
Measure
Observe behavior
Semen exam
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Breeding Soundness ExamScrotal circumference correlates to:
1. semen output
2. age of puberty in daughters
WBC indicate infection
Class Scrotal
Circumference
(>14 months)
Motility Morphology Debris
Excellent > 25 cm > 50% > 90% No WBC
Satisfactory > 30% > 70% No WBC
Questionable < 30% <70%May have
WBC
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Breeding Soundness
Check for extra
teats
Check for teat
placement
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Bio-Security
Johne’s
CAE
CLA
TB
Brucellosis
Hamac.co.nz
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How Many Bucks Do I Need?
How many does
to be freshened in
what time period
How small of a
window for
freshening
Off-season
breeding
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Nurturing
Feeding Young
Bucks
Body Condition
Handling
Housing
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Feeding Young Bucks
Same nutrient
requirements as
doelings
White salt
Ammonium
chloride
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Body Condition
Feed to body condition
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Handling
Teach to lead when
young
Frequent human
interaction in young
buck pens
Check body condition
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Housing
Good
ventilation
Tall fences
Separate from
does by 3
months of age
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Pre-Breeding
Body Condition
Scoring
Soundness
Trim feet
Nutrition
Vaccinations
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Body Condition SCORE SPINOUS
PROCESS
RIB CAGE LOIN EYE
BCS 1 Easy to see &
feel, sharp
Easy to feel &
can feel under
No fat covering
BCS 2 Thin Easy to feel,
but smooth
Smooth, slightly
rounded, need to
use slight pressure
to feel
Smooth, even
fat cover
BCS 3 Good Condition
Smooth and rounded
Smooth, even feel Smooth, even
fat cover
BCS 4 Fat, firm pressure, no
points can be felt
Individual ribs can
not be felt, but can
still feel indent
between ribs
Thick fat
BCS 5 Obese
Smooth, no individual
vertebra can be felt
Individual ribs can
not be felt. No
separation of ribs
felt
Thick fat covering,
may be lumpy and
"jiggly"
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Anatomy
http://kinne.net/bcs.htm
Poor
Thin
Good
Fat
Obese
http://www.luresext.edu/goats/res
earch/bcshowto.html
Sternum
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Trim feet
Trim feet regularly.
Just do it!
http://www.goatworld.com/articles/feet/footcare.shtml#photos
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Nutrition Pre-breeding
Increase energy by
10%
Increase vitamins
Minerals
Selenium injection
BoSe
Multimin
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Vaccinations & Testing
CDT
CL
Test for Brucellosis
TB
CAE
DNA Typing
G-6-S
Alpha S-1 Casein
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Breeding
Social Interactions
Pen vs Hand Breeding
Doe Management
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Social Interactions
Dominant Bucks
Timid Bucks/Dominant
Does
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Pen vs Hand Breeding
Choose buck for
ideal genetic mating
Any one buck is not
the ideal mate for all
does
Prevent buck from
breeding pregnant
does & causing
abortions
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Doe Management
Remove Pregnant Does
to prevent abortions
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Nutrient Requirements
Can be found in
Nutrient
Requirements of
Small Ruminants
by National
Research Council
2007 edition
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Rules of Thumb
Almost identical to dry mature does
Requires:
½ the protein of lactating doe feed
¼ calcium of lactating does
½ phosphorus of lactating does
Same vitamins & micro-minerals
Raise the energy 10% in diet pre-breeding
Ammonium Chloride
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Problems
Urolithiasis
Venereal
Diseases
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Urolithiasis
Most commonly formed from calcium, magnesium &
phosphorus (phosphatic calculi)
Phosphatic Calculi caused by: high concentrate feeding/low roughage
low dietary calcium:phosphorus ratios
high magnesium
alkaline urine
hay rich in cations
urinary tract infections
Silicate Calculi plants or water containing high silica
Oxalate Calculi ingestion of excessive amounts of oxalate-containing plants
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Urolithiasis PreventionIncrease the calcium to
phosphorus ratio (2:1)
Increase water intake by force
feeding salt
Feed low potassium forages
No molasses to bucks
Avoid substances high in
oxalate, silica or magnesium
In wethers avoid early
castration?
Ammonium Chloride – not to
exceed 0.5 % of diet