Virginia Herd Health Management Service P.C, PO Box 555, Madison, VA 22727, USA.
Vet Clin North Am Food Anim Pract. 2024 Nov;40(3):399-413. doi: 10.1016/j.cvfa.2024.05.005. Epub 2024 Aug 23.
This article talks about how genomic evaluation has changed how sires are selected in the major dairy and beef breeds. The population of bulls being evaluated for dairy herd sire usage has grown perhaps 10 to 20 fold through the use of genomic screening of potential sires prior to purchase and admission to a bull stud. The number actually standing at stud has not changed. Genomic evaluation in both beef and dairy breeds has been an important component in the substantial growth of the beef (sire) on dairy (cow) phenomena.
本文讨论了基因组评估如何改变了主要奶牛和肉牛品种中种公牛的选择方式。通过在购买和进入公牛养殖场之前对潜在种公牛进行基因组筛选,用于奶牛群种公牛使用的公牛群体的评估数量可能增长了 10 到 20 倍。实际上处于种公牛状态的数量并没有改变。基因组评估在肉牛和奶牛品种中都是奶牛(母牛)上肉牛(种公牛)现象大量增长的重要组成部分。