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ANSC 108 Cattle Performance Math
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ANSC 108 Cattle Performance Math
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ANSC 108 Cattle Performance MathConception Rate in Herd - ANS-Number of cows pregnant at the end of breeding
season/ number of cows total used during the breeding season
- then multiple by 100)
(95/100 = .95 .95x100= 95%)
Calf Crop Percent Weaned - ANS-Number of calves successfully weaned/ total
numbers of cows during breeding season
- then multiply by 100
(85/100 = .85 .85x100= 85%
Fully Adjusted Weaning Weight of a Bull Calf (EX: Calf 9110) - ANS-[(Weaning Weight -
Birth Weight)/ Age in Days of Weaning x 205] + Birth Weight + Adjustment Factor (Age
of Dam/ Sex of Calf)
[(750-95)/220 x 205] + 95 + 40 = 74
Average Daily Gain of Bull Calf for Post Weaning Weight Test Period - ANS-(Yearling
Weight - Weaning Weight) / (Age of Yearling Weight - Age of Weaning)
(1280-705) / (360-195) = 3.48
Feed Conversion of 3 Bulls for Post Weaning Period - ANS-Individual Bull: (Yearling
Weigh - Weaning Weight)
-do this for all three specimen
Divide overall food consumed by the sum of all three bulls calculations
(1300-750) = 550
(1265-685) = 580
(1280-705) = 575
550 + 580 + 575 = 1705
11,800/1705 = 6.92 Lbs feed per pound gained
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