Abstract
The genetic structure of the populations of the Rhode-Island Red chicken line K1 and the White Leghorn chicken line B(5) of the Belarusian selection was determined according to the 24 InDel and C-2402T polymorphisms of the prolactin gene PRL, MspI polymorphism in 1 and 4 introns of the growth hormone gene GH, as well as HinfI polymorphism of the insulin-like growth factor I gene IGF-I. It was shown that males and females of the White Leghorn chicken line B(5) of egg productivity and the Rhode-Island Red chicken line K1 of egg-meat productivity differ in the allele occurrence frequency of the studied genes. The alleles of the PRL and GH genes associated with increased egg productivity were the most widespread among the representatives of the White Leghorn chicken line B(5). The data obtained can be used
 for the targeted selection of the hens of the studied lines.
Published Version
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