Reproductive Performance of Two- and Three-year-old Bulls Assigned Twenty-five or Forty Cows during the Breeding Period
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چکیده
Twoand 3-year-old beef bulls were exposed to 25 or 40 beef cows on pasture during a 90-day breeding period. Reproductive performance of bulls by age of bull and size of cow group was evaluated in terms of percentage calf crop. Results indicated that reproductive performance of 2-year-old bulls was higher, but not significantly different (P>.05), than that of 3-year-old bulls. The percentage calf crop from 40 vs 25 cows per bull was not different (P>.05). Differences among bulls (within age of bull and size of cow group) for percentage calf crop were significant for each of four intervals during the calving periods. (
منابع مشابه
Breeding performance of bulls assigned either to 40 cows per bull or 80 cows per two bulls during the breeding period.
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