萨陶寒三元杂交肉羊主要经济性状表型相关及回归分析  

Phenotype Correlation and Regression Analysis of the Main Economic Character in Sa-Tao-Han Three Breeds Hybridized Sheep

作　　者：贾存灵[1] 魏泽辉[2] 孔祥浩[1] 张玉枝[1] 贾志海[1] 

机构地区：[1]中国农业大学动物科技学院,北京100094 [2]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《湖北农业科学》2008年第2期203-206,共4页Hubei Agricultural Sciences

基　　金：国家高技术研究发展计划项目(2002AA241181);西北农林科技大学科研启动基金项目(01140403)

摘　　要：运用SAS软件分析了萨福克(×无角陶赛特×小尾寒羊)三元杂交组合3月龄公羔体尺与体重间的表型相关、体尺对体重的直接和间接影响,并建立了最优回归模型。萨福克(×无角陶赛特×小尾寒羊)三元杂交组合3月龄羔羊体尺各指标均与体重有极显著的相关关系(P<0.01),其中胸深和胸围是影响三元杂交公羔体重的主要因素。建议在选择三元杂交公羔体重的同时,应加强对胸深和胸围的选择力度。The phenotype correlation between body size and body weight, the direct and indirect effect of body size on body weight of hybridized sheep （S×（D×H））were analyzed by SAS software, and the optimum regression equation was established subsequently. The results indicated that there were significant relations between body size and body weight of the lamb （P〈 0.01）. Chest depth and chest girth were the major body size factors affecting the body weight. Therefore, the chest depth and chest girth should be considered at the same time for selecting body weights.

关 键 词：三元杂交羊 体尺 体重 表型相关 回归分析 

分 类 号：S826.92[农业科学—畜牧学] S813.22[农业科学—畜牧兽医]