Genome-wide association analysis identifies candidate genes for carcass yields in Peking ducks

Area of Science:

• Animal Genetics
• Genomics
• Poultry Science

Background:

• Peking ducks are economically important for meat and fat production.
• Limited understanding of the genetic basis for carcass yield in ducks.

Purpose of the Study:

• To identify single-nucleotide polymorphisms (SNPs) associated with carcass yield traits in Peking ducks using genome-wide association analysis.
• To pinpoint candidate genes that influence carcass traits for improved breeding.

Main Methods:

• Genome-wide association analysis was performed on 643 Peking ducks at 42 days of age.
• Seven carcass traits were analyzed to detect significant genetic loci and SNPs.
• Candidate genes linked to carcass yield were identified based on significant associations.

Main Results:

• Thirty-five significant loci associated with carcass traits were detected.
• Eight single-nucleotide polymorphisms (SNPs) achieved genome-wide significance.
• Genes including KIF20B, AGBL5, SGSM1, MRO, PLAG1, XKR4, and TGS1 were identified as important candidates.

Conclusions:

• This study reveals novel genetic loci and candidate genes influencing carcass yield in Peking ducks.
• Findings support the development of marker-assisted breeding programs to enhance economic traits in ducks.
• The identified genes contribute to understanding the molecular genetic mechanisms of duck body traits.