SUMMARY. The genetic structure of the population of Rhode Island Red chicken breed for the growth hormone gene, pituitary transcription factor-1 gene, the trans-forming growth factor-beta gene family and the prolactin receptor gene has been studied. The alleles frequencies for MspI-polymorphism in the first intron of the growth hormone gene was 0.39 (A), 0.13 (B), and 0.48 (C); for SacI-polymorphism in the fourth intron of the growth hormone gene – 0.11 (A) and 0.89 (B); for the pituitary transcription factor-1 gene – 0.65 (I) and 0.35 (D); for the transforming growth factor β1 gene – 0,15 (B) and 0,85 (F); for the transforming growth factor β2 gene – 0,61 (B) and 0,39 (L); for the transforming growth factor β3 – 0,33 (B) and 0,67 (L) respectively. The prolactin receptor gene (the fifth exon) in the experimental chicken population was monomorphic. For all studied polymorphic loci the population of Rhode Island Red chicken breed was in Hardy-Weinberg equilibrium state.
Keywords: chicken, population, polymorphism, gene, restriction, breed, line
