影响南非肉用美利奴羊生长性状的非遗传因素  

Non-genetic Factors Affecting Growth Traits of South African Mutton Merino Sheep

作　　者：李秀丽[1,2] 

机构地区：[1]山东畜牧兽医职业学院,潍坊261061 [2]山西农业大学动物科技学院,太谷030801

出　　处：《中国草食动物科学》2014年第4期13-15,18,共4页China Herbivore Science

基　　金：山西省科技攻关项目(011029)

摘　　要：根据山西省沁水示范牧场2005—2008年度出生的183只羔羊的0-12月龄的生长记录,采用SPSS 17.0软件分析了羔羊出生年份、出生月份、出生类型、母亲年龄、哺育类型和性别等非遗传因素对南非肉用美利奴羊生长性状的影响。结果表明：①出生年份和母亲年龄对初生重的影响极显著（P〈0.01）;②出生年份、出生月份和性别对断奶重的影响极显著（P〈0.01）;③出生年份和性别对周岁重的影响极显著（P〈0.01）;④出生类型和性别对初生重的影响显著（P〈0.05）;⑤其余各因素对体重影响均不显著（P〉0.05）。这些结果可为今后估计南非肉用美利奴羊遗传参数和育种值时固定效应的划分提供科学依据,为该品种早期选种奠定基础。The effects of non-genetic factors,including birth year,birth month,birth type,dam age,rearing type and sex,on the growth traits of South African Mutton Merino sheep were estimated by analyzing the records of 183 lambs born from 2005 to2008 in Qinshui Demonstration farm in Shanxi Province by using SPSS 17.0 software. The main results were as follows： ① birth year and dam age could significantly influence offspring birth weight（P〈0.01）;②weaning weight was significantly affected by birth year,birth month and sex（P〈0.01）;③birth year and sex significantly influenced the yearling weight（P〈0.01）;④birth typeand sexcould affectbirth weight（P〈0.05）;⑤ other factors had no influence on the weight（P〈0.05）. The results could providescientificbasisfor theestimation of geneticp ara meters and thedivision of breeding values of the fixed effects,and lay a foundation for the early selection of the breed.

关 键 词：南非肉用美利奴羊 生长性状 非遗传因素 一般线性模型 

分 类 号：S826.2[农业科学—畜牧学]