中国草食动物科学2026，Vol.46Issue(1)：79-86,8.DOI:10.3969/j.issn.2095-3887.2025.00.001
兰州大尾羊体重和体尺性状的主成分分析和聚类分析
Principal Component Analysis and Cluster Analysis of Body Weight and Body Size Traits in Lanzhou Fat-tailed Sheep
摘要
Abstract
To investigate the correlation between body weight and body measurement traits of Lanzhou Fat-tailed sheep and to reveal their growth and development patterns as well as genetic characteristics,this study measured the body height(X1),body length(X2),chest circumference(X3),chest width(X4),chest depth(X5),cannon circumference(X6),rump width(X7),tail length(X8),tail width(X9),and body weight(Y)of 156 adult Lanzhou Fat-tailed sheep(18 rams and 138 ewes).The data were subjected to correlation analysis,principal component analysis,regression analysis,and hierarchical cluster analysis.The results showed that the body weight of Lanzhou Fat-tailed sheep ram was ex-tremely significantly positively correlated with body height,body length,chest circumference,chest width,cannon cir-cumference,and rump width,while the body weight of ewe was extremely significantly positively correlated with all nine body measurement traits.Principal component analysis simplified the body weight and body measurement traits of rams and ewes into three and two principal components,respectively,with chest circumference,body height,and tail length being the main body measurement traits contributing to these principal components.The optimal regression equations for ram and ewe were Yram=1.635X3+0.417X5-100.635(R2=0.886,P＜0.01)and Yewe=0.578X1+0.433X3+4.482X6+0.926X9-85.937(R2=0.631,P＜0.01),respectively.Additionally,cluster analysis divided Lanzhou Fat-tailed sheep into three different growth and development groups,in which each group showed similar body weight and body measurement traits.In conclusion,there are significant differences and correlations in the growth levels of body weight and body mea-surement traits in Lanzhou Fat-tailed sheep populations,among them,chest circumference,body height,and body length showed the strongest correlation with body weight.Therefore,ram selection and breeding should be focus on chest cir-cumference and body height,while ewe should be focus on chest circumference and body length.关键词
兰州大尾羊/体重/体尺性状/主成分分析/回归分析Key words
Lanzhou Fat-tailed sheep/weight/body size traits/principal component analysis/regression analysis分类
农业科技引用本文复制引用
张俊哲,陈天莹,庞振琨,杨启元,颜海藩,杨具田,张浩,徐红伟,李铀..兰州大尾羊体重和体尺性状的主成分分析和聚类分析[J].中国草食动物科学,2026,46(1):79-86,8.基金项目
国家自然科学基金(32060741) （32060741）
中共甘肃省委组织部省级人才项目(51202506) （51202506）
甘肃省高校产业支撑计划项目(2023CYZC-08) （2023CYZC-08）
兰州市城关区科技局科技人才创新创业项目(2023-rc-6) （2023-rc-6）
西北民族大学中央高校基本科研业务费项目(31920240109) （31920240109）
