Acta Veterinaria et Zootechnica Sinica ›› 2021, Vol. 52 ›› Issue (9): 2416-2428.doi: 10.11843/j.issn.0366-6964.2021.09.005

• ANIMAL GENETICS AND BREEDING • Previous Articles     Next Articles

Genetic Parameters Estimation and Key Genes Identification for Meat Quality Traits of Fast-growing Yellow-feather Meat-type Chickens

YANG Xinting1, ZHENG Maiqing1, TAN Xiaodong1, ZHAO Guiping1, HUANG Chao2, LI Sen1, LI Wei1, WEN Jie1, LIU Ranran1*   

  1. 1. Key Laboratory of Animal (Poultry) Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. Guangxi Jinling Husbandry Group CO. Ltd., Nanning 530049, China
  • Received:2021-01-19 Online:2021-09-23 Published:2021-09-26

Abstract: This experiment aimed to excavate the effective regions and key genes related to meat quality traits in fast-growing yellow-feather meat-type chickens. In this experiment, 1 923 fast-growing yellow-feather meat-type chickens were slaughtered at 56 days of age to measure carcass and meat quality traits, and genotyped with the customized chicken 55K SNP array. The genetic parameters for carcass and meat quality traits were estimated using the traditional best linear unbiased prediction (BLUP) and genomic best linear unbiased prediction (GBLUP) methods. The key QTL regions and genes were detected using genome-wide association study (GWAS). The results showed that the estimated heritability of pH, meat color L24 h* as a member of the solute vector family. In addition, the results showed that two haplotypes on chromosome 5 had extremely significant effects on pH and meat color traits. These results lay an important foundation for the optimization of genetic selection scheme and the development of molecular breeding technology for meat quality of yellow-feather meat-type chickens.

Key words: yellow-feather meat-type chickens, pH, meat color, genetic parameter, genome-wide association study(GWAS)

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