摘要
396头适繁母牦牛和226头围产期牦牛按体况评分方法进行体况评分,并在发情季节进行了发情率的跟踪观察;对446头围产期牦牛按体况评分2.0组和2.0以下组在进行不同量补饲对比试验,旨在探讨体况基础上的营养调控繁殖研究。结果表明:发情牦牛的体况评分为4.16±0.44,未发情牦牛的体况评分为3.49±0.45,差异极显著;妊娠母牦牛产前体况评分在2.63,产后体况评分下降到0.34的母牦牛产后发情率达到45.46%,而产前体况低于2.0,产后体况下降0.5以上的母牦牛产后发情周期不能恢复;围产期牦牛体况评分低于2.0,补饲1kg/d,围产期体况高于2.0,补饲0.5kg/d,能使17%～30%的产后母牦牛当年进入发情配种状态。
396 breeding yaks and 226 perinatal yaks were done the body condition score （ BCS ）, and the estrus rate were observed in the oestrous season. 446 perinatal yaks were fed according to BCS in 2.0 group and BCS less 2.0 fed, aim to study the relationship between nutrition and reprodution. The results showed the BCS of estrous yak were 4.16 ± 0.44 and BCS of not heat yak were 3.49±0.45. There is Viry significant diiferen. The estrus rate of yak which the peripartum BCS of yak were 2. 63 and postpartum BCS were decreased to 0.34, estrus yate were 45.46% in the postpartum, but the postpartum estrus cycle of yak which the peripartum BCS of yak were less 2.0 and postpartum BCS were lower over 0.5 were not recovered. The estms rate of postpartum yak were 17% - 30% ,which perinatal yaks were BCS less 2.0 or over 2.0 to be fed lkg/d and 0.5kg/d, respectively.
出处
《青海畜牧兽医杂志》
2012年第5期4-5,共2页
Chinese Qinghai Journal of Animal and Veterinary Sciences
关键词
牦牛
体况评分
繁殖
yak
body coalition score
reproduction
