Генетична структура стада української чорно-рябої молочної породи великої рогатої худоби СТОВ «Агросвіт» за поліморфізмом QTL-генів

The analysis of genetic structure of herd of Ukrainian Black and White Dairy cattle breed in Ltd "Agrosvit" on polymorphism of five QTL-genes associated with milk production have been conducted. On the basis of allele frequency distribution it have been calculated the main indices of genetic variability of investigated cattle population: effective number of alleles, Shennon index and Rite index. It has been revealed the low frequency of economic valuable alleles on k-casein and growth hormone genes. The analysis allows conclude that the productive potential of investigated herd is not sufficient. There is a necessity in improvement of selection activity in this herd.