犊牛初生重分布及其对母牛助产率的影响分析  

Distribution of Birth Weight of Calves and Analysis of Its Effect on Midwifery Rate of Cows

作　　者：薛雅之 吐日根白乙拉 XUE Ya-zhi;Turigenbaiyila(College of Animal Sciences,Inner Mongolia Agricultural University,Hohhot 010018)

机构地区：[1]内蒙古农业大学动物科学学院,呼和浩特010018

出　　处：《中国奶牛》2020年第6期18-20,共3页China Dairy Cattle

摘　　要：本文搜集了HG1牧场2013~2018年间的产犊数据,选择正产(282±15d)、单胎的荷斯坦母牛共17525头次(初产6515头次、经产11010头次)的产犊数据。犊牛分成初产牛犊牛和经产牛犊牛,并分别按犊牛初生重(TZ,kg)分为8个阶段(TZ<30;30≤TZ<35;35≤TZ<40;40≤TZ<45;45≤TZ<50;50≤TZ<55;55≤TZ﹤60;60≤TZ),探讨了犊牛初生重对母牛助产率的影响。结果表明,犊牛初生重对母牛助产率有显著影响(初产牛P<0.01、经产牛P<0.05);初产母牛和经产母牛平均助产率分别为10.2%和5.3%,所产犊牛的平均体重分别是39.4kg和43.8kg。犊牛初生重对母牛助产率有显著影响,同一体重范围内初产牛助产率高于经产牛。The calving datas of HG1 ranch from 2013 to 2018 were collected.The calving datas of 17525(primary birth 6515,multiple birth 11010)single-foetal Holstein cows with normal production(282±15 days)were selected.Calves are divided into calves from primipara cows and multipara cows,and the calves are divided into 7 and 8 stages according to the birth weight(TZ,kg)of calves(TZ<30;30≤TZ<35;35≤TZ<40;40≤TZ<45;45≤TZ<50;50≤TZ<55;55≤TZ﹤60;60≤TZ),which investigatets the effect of newborn weight on midwifery rate of cows.The results shows that the birth weight of calves has a significant effect on the midwifery rate of cows(primipara cows)(P<0.01,multipara cows)(P<0.05).The average midwifery rate of newborn cows and parturient cows is 10.2%and 5.3%respectively,and the average birth weight of calves is 39.4kg and 43.8 kg respectively.The birth weight of calves has a significant effect on the delivery rate of cows.And the midwifery rate of primipara cows in the same body weight range is higher than that of the multipara cows.

关 键 词：初产牛 经产牛 初生重 胎次 助产率 

分 类 号：S823.3[农业科学—畜牧学]