关键词: 优质肉鸡, 胴体外观性状, 遗传力, 相关

Abstract: [Objective] The Heritability of carcass was appearance estimated and the genetic and phenotypic correlation between the traits also evaluated, in order to provide basic theoretical for the breeding and improve main quality characters of carcass appearance. [Method] The paternal half-sib correlation method was used to estimate the heritability of the skin thickness of back, fat width, pore density and the body weight of high-quality chicken S3 line at the 12 sd week. [Results] The results showed that the heritability of skin thickness of back, fat width and pore density were 0.201, 0.225, 0.723 and 0.584, respectively. The heritability of skin thickness and fat width were medium. It was high heritability of pore density. The pore density was significant positive correlation with intramuscular fat (P<0.01), and correlation with inosinic acid (P<0.05), and significant negative correlation with VB1. The fat width correlation with the rate of water loss (RWL), intramuscular fat and fat width (P<0.01). The skin thickness, pH, intramuscular fat content (IMF)and fat width were significantly correlated (P<0.01)and correlated with RWL, meat color and inosine acid (P<0.05). [Conclusion] The skin thickness and pore density were good markers for selective breeding, and could improve the quality of meat.

Key words: high-quality broiler chicken, carcass appearance performance, heritability, correlation