黄羽麒麟鸡（卷羽鸡）体重与体尺性状指标主成分分析

利用主成分分析法对12周龄黄羽麒麟鸡的7个体型性状进行统计分析,将众多的性状综合成几个主成分,旨在了解体尺性状和体质量之间的内在关联性,为黄羽麒麟鸡体型性状的选育提供参考依据.结果表明:黄羽麒麟公鸡的体重、体斜长、龙骨长、胸深和胫围均极显著高于母鸡,黄羽麒麟鸡的胫长和胫围这两个性状变异系数较大,选育潜力大;体重与体斜长、龙骨长、胸深、胫长和胫围呈极显著正相关,其他体尺性状间存在不同程度的相关性;黄羽麒麟鸡的7个体型性状可简化为3个主成分,累计贡献率占信息总量的91.37％,提取的3个主成分所占信息的侧重各不相同,对黄羽麒麟鸡体型特征的选育具有重要的参考价值.

Principal component analysis of yellow-feathered Kirin chicken's body measurement traits and body weight

The 7 body measurement traits including body weight, body steep length, keel length, chest width,chest deep, shank length, shank girth of yellow -feathered Kirin chicken at 12 weeks were studied by principal component analysis. The various body measurement traits could be summed up as just a few indices with principal component analysis, to study the relationships among all the traits and provide the scientific reference for breeding.The results showed that the body weight, body steep length, keel length, chest deep, shank girth of cock were significantly higher than those of hen. There were big variation coefficient and breeding potential for shank length and shank girth in yellow-feathered Kirin chicken groups. The body weight was significantly positive correlated with body steep length, keel length, chest deep, shank length and shank girth, there were some direct correlations among the other traits. The results indicated that the 7 body measurement traits could simplified to 3 principal components, occupied 91.37% of total information amount. The three selected principal components for information on each were not identical; it was an important reference value for yellow-feathered Kirin chickens bodily form selection.