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Genome-wide association studies reveal the genetic basis of growth and carcass traits in Sichuan Shelduck. | LitMetric

Genome-wide association studies reveal the genetic basis of growth and carcass traits in Sichuan Shelduck.

Poult Sci

Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 610000, China. Electronic address:

Published: November 2024

AI Article Synopsis

  • China has diverse duck populations, and studying their traits can enhance their development and use; this study focuses on the growth and slaughter performance of the endangered Sichuan Shelduck.
  • The average weight of the ducks at 90 days is about 1,498 grams, with a noted decrease in the relative growth rate as they age from 0 to 56 days, suggesting genetic stability in growth traits.
  • Genome-wide association studies identified specific genes linked to growth and slaughter traits, providing valuable insights for improving meat production in this local breed.

Article Abstract

China has abundant local duck resource populations, and evaluating the characteristics of these breeds will help improve development and utilization. In this study, we conducted the first investigations of growth and slaughter performance on Sichuan Shelduck (n = 240), an endangered duck local breed. The average body weight is 1497.91 g at 90 d of age. According to the growth curve through data recorded every 2 wk, we observed a low relative growth rate (RGR) for the early growth stage. The RGR shows a decreasing trend with age increasing in the stage from 0 to 56 d of age. The SNP-based heritability estimation showed the growth rate has a relatively high heritability, indicating high genetic stability for this trait. In the correlation analysis, the percentage of leg muscle is positively correlated with the absolute growth rate (AGR) at 28 to 42 d of age, whereas it is negatively correlated with the earlier stages, exhibiting a time-specific correlation result. Additionally, genome-wide association studies (GWAS) identified PCSK6, TOX2, and TOMM7 as potential candidate genes influencing AGR (42-56) and AGR (56-90), while the candidate genes of slaughter traits were PTP4A2, FAM110B, TOX, UBXN2B, and FCHSD2. These results provide an important reference for further understanding the genetic basis of growth and meat production performance of Sichuan Shelduck.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11402601PMC
http://dx.doi.org/10.1016/j.psj.2024.104211DOI Listing

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