不同时期断奶对牦母牛繁殖性能的影响  

Effect of Weaning in Different Period on Reproductive Performancl of Female Yak

作　　者：王伟[1] 

机构地区：[1]青海省大通种牛场,大通810102

出　　处：《青海畜牧兽医杂志》2007年第6期18-18,共1页Chinese Qinghai Journal of Animal and Veterinary Sciences

摘　　要：对178头牦母牛分别在8月26日(Ⅰ组)和10月6日(Ⅱ)进行犊牛断奶。Ⅰ组发情率为99%,繁殖率89%;Ⅱ组发情率28%,繁殖率33%。Ⅰ组比Ⅱ组的发情率和产犊率分别提高了66%和64%。群体受胎率提高了9.34%。对断奶后的母牛和犊牛进行人工补饲,母牛的膘情和犊牛的生长发育都良好。178 Female yaks were Weaned on 26 August （growp Ⅰ ）and 6 October , （group Ⅱ ） ,respectively. The estrus rate and the reproductive rate were 99 % and 89 % in the group Ⅰ , and 28 % and 33 % in the group Ⅱ, respectively, The estrus rate and the calving rate in the group Ⅰ increased 66% and 64% than those in the group Ⅱ, respectively. The conception rate of yak herd increased 9.34 % Under the female yaks and calves were artificial supplemented, the nutritional status of female, yak and the growth and development of calves were good.

关 键 词：牦牛 断奶 发情率 繁殖率 

分 类 号：S823.85[农业科学—畜牧学]