MAIN RESULTS OF PRIORITY RESEARCHES OF INSTITUTE'S OF ANIMAL SCINCE OF NAAS SCIENTIFIC SCHOOLS (on the 90th anniversary of foundation)

Abstract

ing frequencies of factors of blood groups. The EAB system of blood groups showed an increase in the value of the homozygosity coefficient from 2.12 % to 2.89 % and the degree of homozygosity (H) from 6.69 % to 7.83 % for the 20-year population study period. The data obtained is a reflection of the decrease in the overall reserve of genetic variability of the studied herd. When conducting genetic monitoring, as well as to control genetic diversity, the level of homo-and heterozygosity of cattle populations, it is recommended to use immunogenetic methods that allow the genetic level to control the genotypic situation and promptly adjust the breeding stratege.