Principal Component Analysis of Lueyang Black-Bone Chicken's Body Measurement Trait and Body Weight

In this study,6 body measurement traits and body weight of 120 adult Lueyang black-bone chickens bred in the same management conditions were measured and analyzed by principal component analysis,for the choice of 5 principal components whose contributing rate accumulated up to 92.183 4% to study the relationships among all the traits in order.The results showed that the adult cock body weight,body diagonal length,sternum length,shank length,chest angle were significantly higher than those of the hen(P0.05).There were big variation coefficient and breeding potential for chest width,chest deep,shank length and body weight in Lueyang black-bone chicken groups.There were high significant correlation between body weight and body diagonal length,chest width,sternum length,shank length(P0.01),and body weight was significantly correlated to chest deep and chest angle(P0.05).There were some direct correlations among the other traits.Principal component analysis indicated that the eigenvalue of each principal component distributed broadly and the five selected principal components for information on each were not identical by statistical calculation.To some extent,they reflected the Lueyang black-bone chicken's bodily form feature and provided some clues for future breeding.