Identifying New Loci and Genes Associated with Feed Efficiency in Broilers.

ABSTRACT: Feed efficiency is a key economic trait that affects the cost of production in broiler farming. Reducing broiler feed costs contributes to reducing excessive feed consumption and increasing the productivity of broiler breeding. Therefore, identifying genetic regions associated with feed efficiency is crucial for broiler breeding. In this study, we performed genome-wide association (GWAS) analyses of feed conversion ratio (FCR) and residual feed intake (RFI) traits for four growth cycles (72-81, 81-89, 89-113, and 113-120 days of age) using 55K single-nucleotide microarray genotypic data of 4493 Wenchang chickens from two generations. In the single-trait GWAS, a total of 59 SNPs were identified, and 36 genes were annotated within the ±50 kb regions surrounding candidate loci (including A

SUBMITTER: Luo N 

PROVIDER: S-EPMC12429723 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature