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September 17, 2026Veterinary SciencesOpen Access

Genome-Wide Association Studies Reveal Key Candidate Genes for Egg Weight and Quality Components in an F2 Japanese Quail Resource Population

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Authors

НВН. А. ВолковаMRMichael N RomanovPLPolina V. Larionova

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Overview

Genome-wide association study reveals candidate genes linked to egg weight and quality in Japanese quails, highlighting valuable targets for marker-assisted poultry breeding.

Key Points

  • To identify single nucleotide polymorphisms and candidate genes associated with egg weight and quality components in laying quails.
  • Evaluated an F2 resource population of 102 laying Japanese quails produced from a cross of divergent Japanese and Texas White breeds.
  • Measured six phenotypic traits: egg weight (EW), eggshell weight (ESW), albumen weight (AW), thick albumen weight (TAW), yolk weight (YW), and albumen-to-yolk ratio (AYR).
  • Conducted a genome-wide association study (GWAS) using genotyping-by-sequencing data to map trait-associated genetic variants.
  • Identified 16 significant single nucleotide polymorphisms (SNPs) and 88 candidate genes associated with the measured egg traits.
  • Prioritized seven candidate genes (NTN4, CLDN10, AGAP3, DUSP19, STAB1, SFMBT1, and RNF130) that overlapped with significant SNPs for EW, ESW, AW, YW, and AYR.
  • Detected three pleiotropic SNPs (12:309207, 12:335220, and 12:470023) associated with multiple egg traits, alongside two SNPs within AGAP3 linked to albumen weight.

Cite This Study

Волкова et al. (2026) studied this question.

synapsesocial.com/papers/6aabb7c95f706d05830e717fhttps://doi.org/10.3390/vetsci13090967
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