摘要
体况评分在奶牛的生产中起到很重要的作用,对繁殖性能有一定程度的影响。论文通过对江苏省某奶牛场722头处于产犊产后60d以内的中国荷斯坦牛体况评分进行测定,并收集牛只繁殖性能相关数据,采用多因素方差分析模型分析体况评分、胎次、体况评分时泌乳阶段等因素对奶牛部分繁殖性能的影响。结果表明：BCS=4时母牛妊娠配种次数最少,且产孕间隔最短,而BCS小于2.5的奶牛每次妊娠所需的配种次数也最多,而且从产犊到妊娠所需的时间也最长。该结果提示在奶产后30~60d内进行体况评分对提高奶牛繁殖性能有较强的指示作用。
Body condition revealed to be key factors influencing the reproduction performance of dairy cattle. The BCS of 722 Chinese Holstein cows,within 60 days after calving,from a dairy farm in Jiangsu were measured and the effect of parity, lactation month, body conditionon the reproduction performances were analyzed by multi-factor variance analysis model. The results showed that the cows had the least number of service and shortest time interval from calving to conception when BCS was 4; otherwise cows with 2.5 or fewer BCS had the biggest number of service per conception and longest interval between cal- ving and conception. The BCS of cows measured from 30 to 60 days after calving were important for the reproduction performances of Chinese Holstein cows.
出处
《家畜生态学报》
北大核心
2015年第8期45-49,共5页
Journal of Domestic Animal Ecology
基金
江苏省苏北专项(BN2013038)
徐州市科技计划(XF13C019)
关键词
中国荷斯坦牛
体况评分
繁殖性能
Chinese Holstein cows
body condition score （BCS）
reproduction performance
