Associations of Transcription Factor 21 Gene Polymorphisms with the Growth and Body Composition Traits in Broilers

This study aims to identify molecular marker loci that could be applied in broiler breeding programs. In this study, we used public databases to locate the ( ) gene that affected the economically important traits in broilers. Ten single nucleotide polymorphisms were detected in the gene by monoclonal sequencing. The polymorphisms of these 10 SNPs in the gene were significantly associated ( < 0.05) with multiple growth and body composition traits. Furthermore, the genotype of g.-911T>G was identified to significantly increase the heart weight trait without affecting the negative traits, such as abdominal fat and reproduction by multiple methods. Thus, it was speculated that the g.-911T>G identified in the gene might be used in marker-assisted selection in the broiler breeding program.