Recently, all over the world, breeding work has been carried out with the active use of the methods of modern genetics. The article presents the results of a study of the relationship between the DNA markers of calpastatin (CAST) and leptin (LEP 387) with the meat productivity of Edilbaev sheep, as well as KAP 1.3 with the wool productivity of Caucasian sheep. It was revealed that these DNA markers have a sufficient level of polymorphism in the studied breeds, as well as presence of a relationship between the genotypes of the studied DNA markers with the productivity of the studied breeds.
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