草食家畜Issue(2)：1-7,7.DOI:10.16863/j.cnki.1003-6377.2026.02.001
美萨澳三元杂交肉羊体重与体尺的主成分分析和回归模型的建立
Principal Component Analysis and Regression Model Establishment of Body Weight and Body Measurements in Merino-White Suffolk-Australian White Crossbred Mutton Sheep
摘要
Abstract
[Objective]To explore the relationship between body weight and body measurements in tri-crossbred mutton sheep derived from Chinese Merino,White Suffolk breeds and Australian White.[Methods]Body weight and body measurements(body length,withers height,chest circumference and cannon circumference)were measured in 100 two-year-old mutton sheep.Using SPSS 26.0 software,correlation analysis,principal component analysis and multiple regression analysis were performed to establish relationships between body weight and body measurements in adult crossbred mutton sheep,and to construct optimal regression models for body weight on body measurement traits.[Results]The results indicated that the coefficients of variation for body weight and body measurements in crossbred mutton sheep,ranked from highest to lowest,were:body weight>cannon circumference>body length>withers height>chest circumference.There were extremely significant positive correlations between body weight and withers height,body length,chest circumference,and cannon circumference(P<0.01).Body length,chest circumference and cannon circumference collectively explained 71%of the variation in body weight in rams,while chest circumference and body length alone accounted for 79%of this variation in ewes.[Conclusion]Scientific reference for the selective breeding of hybrid mutton sheep can be provided by these findings.关键词
美萨澳三元杂交肉羊/体重/体尺/相关性分析/主成分分析/回归分析Key words
Merino-White Suffolk-Australian White crossbred mutton sheep/body weight/body measurements/correlation analysis/principal component analysis/regression analysis分类
农业科技引用本文复制引用
赵卓,杨杨,代蓉,唐红,王立民,张译元,徐梦思,周平,陈媛媛..美萨澳三元杂交肉羊体重与体尺的主成分分析和回归模型的建立[J].草食家畜,2026,(2):1-7,7.基金项目
新疆生产建设兵团农业创新工程项目(NCG202221) （NCG202221）
新疆生产建设兵团重大项目NYHXGG(2023AA101) （2023AA101）
