Abstract
The article presents the materials of studies, the purpose of which was to form genetic profiles of pigs of maternal breeds with regard to their lineage and polymorphism of marker genes for reproductive and meat-and-fattening traits. The object of the studies was the purebred populations of Belarusian Large White, Belarusian Black-and-White, and Belarusian Yorkshire breed type pigs. Studies have shown that the genes ESR (reproductive traits), IGF-2 (fattening and reproductive traits), HFABP and RYR 1 (meat quality traits) have the greatest influence on the animal performance.
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