不同羽色麒麟母鸡的体重与体尺性状主成分分析

试验测定了5周龄不同羽色麒麟母鸡的体重和体尺性状指标,并进行体重与体尺性状的主成分分析,旨在了解不同羽色麒麟母鸡的体重与体尺性状之间的内在关联性,为其选种选育提供科学依据。本试验选用1日龄健康白羽和黄羽麒麟母鸡各50只,分成2组,每组5个重复,每个重复10只母鸡,在相同饲养条件下饲养5周后,对体重和体尺性状进行测定。结果显示,白羽麒麟母鸡胫长变异系数较大,黄羽麒麟母鸡胫围变异性较大,选育潜力大;白羽麒麟母鸡体重与胫长呈极显著正相关（P < 0.01）,相关系数为0.931;黄羽麒麟母鸡体重与胫长为极显著正相关（P < 0.01）,相关系数为0.944,体重与胸骨长、胫围,胫长与胸骨长均为显著正相关（P < 0.05）。不同羽色麒麟母鸡的7个体尺性状均可简化为4个主成分,白羽和黄羽麒麟母鸡累计贡献率分别占信息总量的94.784%和94.809%,且简化的4个主成分所占信息的侧重各不相同,均能反映出麒麟母鸡的体型外貌特征。综上所述,自由采食条件下不同羽色麒麟母鸡体重和体尺性状之间存在着显著的相关性,筛选出的白羽和黄羽麒麟母鸡4个主成分均能反映出麒麟母鸡的体型外貌特征,可为不同体型特征麒麟母鸡的选育提供参考。

Principal Component Analysis Between Body Size Traits and Body Weight of Different Feathers Kirin Hens

In this study,the body weight and body size traits were measured and analyzed by principal component analysis of 5-week-old different feathers Kirin hens to understand the inherent relationship between the body weight and body size traits of different feather Kirin hens and provide the basic information for their selection and breeding.50 one-day-old White feathers Kirin hens and 50 one-day-old Yellow feathers Kirin hens were selected in this experiment and were divided into 2 groups with 5 replicates per group,10 hens per replicate,the body weight and body size were measured at 5 weeks old under the same feeding conditions.The results showed that the variation coefficient of tibia length of White feather Kirin hens and tibia girth of Yellow feather Kirin hens were large which were breeding potential traits.The correlation between body weight and tibia length of White and Yellow feather Kirin hens were both extremely significant (P < 0.01) with the correlation coefficient was 0.931 and 0.944,respectively.And there were significant correlation between body weight and sternal length,tibia girth,tibia length and sternal length (P < 0.05).The 7 body measurement traits of different feathers Kirin hens could simplified to 4 principal components that occupied 94.784% in White feathers Kirin hens and 94.809% in Yellow feathers Kirin hens of total information amount,and each of 4 principal components for information were not identical and could reflect Kirin hens' bodily form feature.In conclusion,there was a significant correlation between body weight and body size traits of different feathers Kirin hens under free feeding conditions.And it suggested that the selected 4 principal components could reflect Kirin hens' bodily form feature and provide the basic information for selecting and breeding in different feathers Kirin hens.