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[Association of single nucleotide polymorphism of RB1 gene with body weight traits in chicken].

The Northeast Agricultural University broiler lines divergently selected for abdominal fat content (NEAUHLF) were used in the current study to investigate the effects of Retinoblastoma1 (RB1) gene on chicken body weight (BW). The single nucleotide polymorphisms (SNPs) of the individuals were detected by MALDI-TOF-MS and PCR-RFLP methods and the genotypes of 27 SNPs were obtained. Haplotypes were constructed by liding window approach. Association analysis between single SNPs and haplotypes and body weight were conducted, respectively. Based on the results of single SNPs and haplotype association analyses. Four SNPs with significant effects on body weight at 1 week of age (BW1) and 2 SNPs with significant effects on BW1 and BW3 were determined. These results suggested that RB1 is an important candidate gene that affects chicken early growth and development.