摘要
为研究不同杂交组合羔羊体尺和体重之间的关系,对548只不同杂交组合6月龄羔羊的体重、体高、体长、胸围、管围进行了聚类分析和主成分分析。结果表明,主成分分析将体尺指标分为重量因子和宽度因子2个主成分,澳湖、杜湖和萨湖杂交一代羔羊累计贡献率分别为73.265%、75.222%和79.463%;聚类分析将体尺性状分为2类,与主成分分析结果一致;建立其综合评价模型表达式,其中,澳湖杂交一代羔羊F_(1)=0.576Y_(1)+0.156Y_(2),杜湖杂交一代羔羊F_(2)=0.603Y_(1)+0.150Y_(2),萨湖杂交一代羔羊F_(3)=0.658Y_(1)+0.136Y_(2),综合得分萨湖杂交一代羔羊>杜湖杂交一代羔羊>澳湖杂交一代羔羊。
In order to study the relationship between body size and body weight of lambs in different hybrid combinations,clustering and principal component analysis were performed on the weight,withers height,body length,chest measurement and bone circumference of 5486-month-old lambs with different hybrid combinations.By principal component analysis,the body size index was divided into two main components:weight factor and width factor.The cumulative contribution rates of AH lambs,DH lambs and SH lambs were 73.265%,75.222%and 79.463%respectively.Using cluster analysis,body size traits were divided into two categories,which was consistent with the results of principal component analysis.To establish its comprehensive evaluation model expression,AH lambs was F_(1)=0.576Y_(1)+0.156Y_(2),DH lambs was F_(2)=0.603Y_(1)+0.150Y_(2),SH lambs was F_(3)=0.658Y_(1)+0.136Y_(2).The comprehensive score was SH>DH>AH.
作者
沈嘉玘
耿智广
施海娜
岳耀敬
杨博辉
卢曾奎
SHEN Jiaqi;GENG Zhiguang;SHI Haina;YUE Yaojing;YANG Bohui;LU Zengkui(Lanzhou Institute of Husbandry and Pharmaceutical Sciences,Chinese Academy of Agricultural Sciences,Lanzhou 730050,China;Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau,Ministry of Agriculture and Rural Affairs,Lanzhou 730050,China;Sheep Breeding Engineering Technology Research Center of Chinese Academy of Agricultural Sciences,Lanzhou 730050,China;Qingyang City Academy of Agricultural Sciences,Qingyang 745000,China)
出处
《中国草食动物科学》
CAS
2022年第5期31-36,共6页
China Herbivore Science
基金
中国农业科学院科技创新工程(25-LZIHPS-07)
中国农业科学院科技创新工程重大科研任务(CAAS-ZDRW202106)
中国农业科学院基本科研业务费专项(1610322021018)。
关键词
杂交组合
肉羊
聚类分析
主成分分析
heterosis
mutton
cluster analysis
principal component analysis
