Development and Characterization of a Single Nucleotide Polymorphism Genotyping Panel for Duck Populations

Area of Science:

• Animal Genomics
• Molecular Genetics

Background:

• Single nucleotide polymorphism (SNP) genotyping panels are crucial for genetic diversity studies and genomic selection in domesticated animals.
• Currently, such panels are unavailable for domesticated ducks, hindering genetic research and breeding programs.

Purpose of the Study:

• To develop a high-density SNP genotyping panel for domesticated ducks.
• To facilitate genetic diversity assessment and genomic selection in duck populations.

Main Methods:

• Whole-genome sequencing data from 74 ducks were analyzed.
• SNP calling was performed, followed by filtering based on minor allele frequency (MAF) and linkage disequilibrium (LD) criteria.
• SNPs from 33 Quantitative Trait Loci (QTL)-associated genes were manually incorporated, and the panel's performance was validated on 28 additional samples.

Main Results:

• A 40K SNP genotyping panel was successfully developed, comprising 35,613 markers after stringent filtering and gene incorporation.
• The panel demonstrated a high call rate (98.9%) and robustness, with 33,870 SNPs confirmed as usable after quality control.
• The developed panel maintained genetic distances and showed suitability for large-scale genomic studies.

Conclusions:

• A robust and high-density SNP genotyping panel for ducks has been established.
• This panel is a valuable tool for advancing genetic improvement, trait selection, and diversity studies in duck populations.
• The successful development addresses a critical need in duck genomics research.