挪威红牛改良荷斯坦奶牛的妊娠率分析  

Analyzing the pregnancy rate of Holstein cow improved from Norwegian red bull

作　　者：杨阳[1] 叶翠芳 王煜舒 李广 陈爱江 王刚 景磊 欧四海[1] YANG Yang;YE Cuifang;WANG Yushu;LI Guang;CHEN Aijiang;WANG Gang;JING Lei;OU Sihai(Shihezi Animal Husbandry and Veterinary Work Station,8th Division,Xinjiang Production and Construction Corps,Shihezi 832000,China;College of Animal Science and Technology,Shihezi University,Shihezi 832000,China;Xinjiang Tianshan Military Reclamation and Animal Husbandry Co.,Ltd.,Shihezi 832000,China)

机构地区：[1]新疆生产建设兵团第八师石河子市畜牧兽医工作站,新疆石河子832000 [2]石河子大学动物科技学院,新疆石河子832000 [3]新疆天山军垦牧业有限责任公司,新疆石河子832000

出　　处：《养殖与饲料》2024年第5期12-16,共5页Animals Breeding and Feed

基　　金：新疆生产建设兵团科技局项目(2021AA004)。

摘　　要：[目的]研究现存混养的条件下挪威红牛配种荷斯坦奶牛后的妊娠优势,以提高荷斯坦奶牛的繁殖力。[方法]以荷斯坦奶牛作为母本,进口挪威红牛冻精为父本,进行杂交改良(挪威红牛♂×荷斯坦奶牛♀),培育杂种牛,统计不同月份、不同年龄段的配种数、妊娠数、妊娠率。[结果]杂交种牛相比于荷斯坦牛,自然发情配种的妊娠率提高36.41百分点;同期处理配种,妊娠率提高30.24百分点;青年牛配种,妊娠率提高47.64百分点;群体年度配种,妊娠率提高了36.83百分点,杂交牛场配种妊娠率显著高于荷斯坦牛场。[结论]杂交牛场经过挪威红牛乳肉兼用型牛的品种改良,明显提高了牛场群体繁育率。[Objectives]The pregnancy advantage of Norwegian red bull after crossing with Holstein cow under existing conditions of mixed farming was studied to improve the reproductive capacity of Holstein cow.[Methods]Holstein cows were fertilized with frozen semen of Norwegian red bull imported(Holstein cow♀×Norwegian red bull♂)to produce hybrids.The number of mating and pregnancies,and the pregnancy rates for different months and age groups were recorded.[Results]The pregnancy rate of hybrids by natural estrus mating was 36.41 percentage points higher than that of Holstein cow.The pregnancy rate of hybrids by same period mating,young cattle mating,and annual population mating increased by 30.24,47.64,and 36.83 percentage points,respectively.The pregnancy rate in hybrid cattle farm was significantly higher than that in Holstein cow farm.[Conclusions]The hybrid cattle farm significantly increased the reproduction rate of the cattle population through the improvement of Norwegian red bull with both milk and meat types.

关 键 词：挪威红牛 荷斯坦奶牛 杂交代 配种 妊娠率 繁殖力 

分 类 号：S823[农业科学—畜牧学]