Acta Veterinaria et Zootechnica Sinica ›› 2023, Vol. 54 ›› Issue (12): 4982-4992.doi: 10.11843/j.issn.0366-6964.2023.12.010

• ANIMAL GENETICS AND BREEDING • Previous Articles     Next Articles

Genome-wide Association Study of Body Weight and Meat Quality Traits in Lihua Mahuang Chickens

FAN Chenyu1,2, SHAN Yanju2, ZHANG Ming2, JI Gaige2, JU Xiaojun2, TU Yunjie2, HE Xi1, SHU Jingting2, LIU Yifan2,3*, ZHANG Haihan1*   

  1. 1. Hunan Engineering Research Center of Poultry Production Safety, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
    2. Key Laboratory for Poultry Genetics and Breeding of Jiangsu Province, Jiangsu Institute of Poultry Science, Yangzhou 225125, China;
    3. Jiangsu Poultry Science Institute S & T Innovation Co. Ltd., Yangzhou 211412, China
  • Received:2023-07-18 Online:2023-12-23 Published:2023-12-26

Abstract: The purpose of this study was to explore the genetic loci and functional genes affecting the weight and meat quality traits of broilers by genome-wide association study (GWAS), and to accumulate theoretical basis for breeding of fast yellow-feathered broilers. The test subjects were 393 Lihua ephedra terminal paternal roosters, which were weighed and collected breast muscle to determine meat quality traits at 60 days of age. Individual genetic variants were obtained by whole genome resequencing, and GWAS analysis of body weight and meat quality traits was performed using PLINK, GEMMA and R software. A total of 2 SNP loci significantly associated with body weight and 8 SNP loci significantly associated with meat quality traits were screened (P<1.15×10-7); The 52 loci associated with body weight and 296 loci associated with meat quality were identified at the potentially significant level (P<2.31×10-6). By annotating these associated SNPs, a total of 99 candidate genes related to body weight, 27 to shear force, 28 to water binding capacity, 57 to pH, and 113 to meat color were selected. It was concluded that FSTL3, MBNL3, NPFF, PFKM, PRKG1, SLC13A5, MDFIC, FGD3, AQP1 may be key candidate genes for body weight and meat quality traits in broilers. The above research results provide important genetic variation sites and subsequent genes for important economic traits of fast type yellow-feathered broilers, and provide key basic data for improving molecular breeding methods for high-quality broilers and accelerating the progress of breed selection.

Key words: fast-growing yellow-feathered broilers, genome-wide association study (GWAS), body weight, meat quality

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