摘要
为探究非遗传因素对湖羊早期生长发育的影响,以南疆某羊场2022年8月—2023年4月1172只湖羊母羊所产的2679只羔羊为研究对象,采用非遗传因素各水平间的多重比较分析羔羊的出生年月、胎次、同胞数和性别等对其初生重的影响。结果表明,出生年月、出生胎次对羔羊初生重的影响不显著(P>0.05);同胞数和性别对羔羊初生重的影响极显著(P<0.01)。因此,在对湖羊进行早期生长性状的选育时,模型中固定效应应包括出生同胞数。在条件允许的情况下,可以使用性控精液控制羔羊出生性别,这有利于提高繁殖效率,增加养殖收益。
In order to explore the impact of non genetic factors on the early growth and development of Hu sheep,this study used 2679 lambs produced by 1172 Hu sheep ewes in a sheep farm in southern Xinjiang from August 2022 to April 2023 as the research object,and used the least squares method to analyze the birth time,parity.Multiple comparative analysis was conducted using genetic factors at various levels to analyze the effects of birth date,parity,sibling number and gender on the birth weight of Hu sheep.The results showed that the impact of birth time and birth parity on birth weight was not significant(P>0.05);the impact of birth type and gender on birth weight was extremely significant(P<0.01).Therefore,when conducting genetic analysis and selection of early growth traits in Hu sheep,the fixed effects in the model should include the number of siblings at birth.If conditions permit,sex control semen can be used to control the birth sex of lambs,which is beneficial for improving reproductive efficiency and increasing breeding profits.
作者
汤得伟
袁岑
刘天涯
肖国亮
TANG Dewei;YUAN Cen;LIU Tianya;XIAO Guoliang(Kashgar Livestock Workstation,Kashgar844000,China;Bachu Anxin Animal Husbandry Co.,Ltd.,Bachu843800,China)
出处
《中国草食动物科学》
CAS
2023年第4期82-84,共3页
China Herbivore Science
基金
自治区农区高效肉羊品种选育推广技术体系(xjnqry-z-2307)
自治区天山英才计划第三期(2021—2023)。
关键词
非遗传因素
湖羊
初生重
non genetic factors
Hu sheep
birth weight
