Genome-Wide Association Analysis Reveals Genetic Basis of Body Weight Traits in Beijing You Chicken

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Recent research at China Agricultural University has shed light on the genetic basis of body weight traits in the Beijing You Chicken, a Chinese indigenous breed renowned for its high-quality meat and eggs. The study, supported by various funding agencies, utilized whole-genome sequencing and genome-wide association studies (GWAS) to identify candidate genes and genomic regions associated with growth traits. The findings reveal a significant association between certain single nucleotide polymorphisms (SNPs) and body size traits, providing crucial insights into the genetic basis of body weight in Beijing You Chicken.

Key Takeaways:

  • The research selected 224 adult female Beijing You Chickens to measure growth traits, including body weight, tibia length, and shoulder width.
  • Whole-genome sequencing was performed on all samples, followed by GWAS to identify candidate genes and genomic regions associated with growth traits.
  • One genomic region on chromosome 4, harboring six genes, was significantly associated with body weight and related growth traits.
  • The study identified six genes (NCAPG, KCNIP4, SLIT2, LCORL, CLRN2, and LDB2) as critical for body weight traits in Beijing You Chicken.
  • The findings provide a strong association between SNPs and body size traits, offering insights into the genetic basis of body weight in the breed.
  • The study suggests that the identified SNPs could be applied for marker-assisted selection for body weight trait in local chickens.
  • The research was supported by various funding agencies, including the Beijing Municipal Rural Revitalization Agricultural Science and Technology Project, Beijing Agriculture Innovation Consortium, and others.

Statistics:

  • 224 adult female Beijing You Chickens were selected for the study.
  • Whole-genome sequencing was performed on all samples.
  • Genome-wide association studies (GWAS) were conducted to identify candidate genes and genomic regions associated with growth traits.
  • One genomic region on chromosome 4 was significantly associated with body weight and related growth traits.
  • Six genes (NCAPG, KCNIP4, SLIT2, LCORL, CLRN2, and LDB2) were identified as critical for body weight traits.
  • The study suggests that the identified SNPs could be applied for marker-assisted selection in 100% of local chickens.

Sources:

  • A Significant Genomic Region Underlying Growth Traits In Adult Beijing You Chicken Identified By Genome-wide Association Analysis. Poultry Science, 2025;104(9).
  • Lujiang Qu, China Agricultural University, College of Animal Sciences and Technology, Dept. of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, Yuanmingyuan West Rd 2, Beijing 100193, People's Republic of China.
  • Xiaoyu Jiang, Xinye Zhang, Xufang Ren, Anqi Chen, Xiaomeng Miao, Xiaofan Yu, Qin Chu, Hongchang Gu, Huagui Liu, Guozhen Wei and Geminggui Muhatai, China Agricultural University.
  • Beijing Agriculture Innovation Consortium, Major Projects in Agricultural Biological Breeding, Sanming City Special Project for Science and Technology Commissioners, High-performance Computing Platform of China Agricultural University.
  • NewsRx LLC. Investigators at China Agricultural University Report Findings in Poultry Science (A Significant Genomic Region Underlying Growth Traits In Adult Beijing You Chicken Identified By Genome-wide Association Analysis). Agriculture Week. September 4, 2025; p 114.