Comparison and comprehensive evaluation of body size,slaughter performance and meat quality among eight local chicken breeds in Guizhou Province
[Objective]This study aimed to compare and analyze the differences in body size,slaughter performance,and meat quality traits among eight local chicken breeds in Guizhou province.The goal was to provide fundamental data for the protection,development,and utilization of local chicken breeds.[Method]Body size indexes,slaughter performance,and meat quality traits of eight local chicken breeds,namely Wu-meng black-bone chickens,Weining chickens,Puding Gaojiao chickens,Xingyi dwarf chickens,Qiandong-nan Xiaoxiang chickens,Chishui black-bone chickens,Changshun green shell laying hens,and Yaoshan chickens,were determined using conventional methods.A comprehensive evaluation model for meat traits was established through principal component analysis.[Result]Significant differences were observed in body size traits,slaughter performance,and meat quality indexes among the eight local chicken breeds in Guizhou Province.However,the slaughter rate exceeded 86%,and the evisceration rate exceeded 67%for all breeds,indicating good meat production performance.The comprehensive evaluation model for broiler chickens was successfully constructed,and the scoring results ranked the breeds as follows:Weining chicken>Wumeng black bone chicken>Puding Gaojiao chicken>Chishui black bone chicken>Yaoshan chicken>Xingyi dwarf chicken>Qiandongnan Xiaoxiang chicken>Changshun green shell layer.[Conclusion]All eight local chicken breeds displayed favorable meat yield and can serve as high-quality broiler germplasm resources.The comprehensive evaluation results indicated that Weining chicken and Wumeng black bone chicken exhibited superior meat performance.
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万方数据
