BLOOD GROUPS OF CATTLE BREEDS AND THEIR USE IN BREEDING.
Keywords:
alleles, immunogenetic control, blood groups, selection, milk production, genotype, herds.Abstract
The study of the genetic polymorphism of erythrocyte antigens, to establish the alleles that control them and the possibility of using them as genetic markers. Investigate the relationship between blood groups and milk productivity (milk yield, fat content in milk) of animals. Determine the possibilities of using blood groups to increase the fertility of cows from the first insemination. Confirm the effectiveness of immunogenetic control of the reliability of the origin of breeding animals.
Scientific novelty of the research. For the first time in the conditions of Uzbekistan, the blood groups of animals of the Swiss breed, as well as the nature of genetic processes in populations of Swiss cattle during the selection process, were studied.
The dependence of the level of milk productivity of cows-daughters on their inheritance of alternative paternal alleles of blood groups was established. The influence of homo- or heterozygosity of cows according to the systems of blood groups on the degree of their fertility was revealed.
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