年龄、胎次、配种月份对奶牛产犊性别的影响  

Analysis Relations between Breeding Age、Parity、Breeding Month and Sex of Calf in Dairy Cattle

作　　者：胡明德[1] 

机构地区：[1]青海大学农牧学院,西宁810003

出　　处：《中国奶牛》2003年第6期26-28,共3页China Dairy Cattle

摘　　要：根据西宁某奶牛场1984-1995年荷斯坦奶牛的配种产犊记录,按不同配种年龄、胎次与配种月份所产犊的性别进行统计分析。结果表明:配种年龄对奶牛产犊性别无显著影响(p>0.05);胎次与奶牛产犊性别的关系表现为第三胎所产公犊显著多于母犊(p<0.05),其它各胎次差异均不显著(p>0.05);配种月份对奶牛产犊性别的影响表现为3-5月配种所产犊牛有母犊多于公犊趋势,但差异不显著(p>0.05),6月-9月配种所产犊牛公犊显著多于母犊(p<0.05),其余各月份差异均不显著(p>0.05)。Based on calving records(1984-1995)of Holstein-Friesian maintained at one of dairy cattle places in XiNing, used the method of statistieal analysis sex of calf of different breeding age ,parity and breeding month. The results indicated: Breeding age did not effect significantly sex of calf (p>0.05);Relations between parity and sex of calf show male calves calved by third-parity cows exceeded significantly female calves of them (p<0.05),difference of other parity were not significant (p>0.05 );Relations between breeding month and sex of calf show female calves calved by cows breeded at 3 -5months did not exceed significantly male calves of them (p>0.05 );Relations between breeding month and sex of calf show female calves calved by cows breeded at 6 till 9 moriths exceeded significantly female calves of them(p<0.05),difference of other parity was not significant(p>0.05).

关 键 词：年龄 胎次 荷斯坦牛 配种月份 奶牛 产犊性别 环境因素 卵巢 遗传因素 

分 类 号：S823.913[农业科学—畜牧学]