Open AccessMonitoring of the allele fund of erythrocyte antigens and DNA polymorphism of genes - markers of beef quality
Author(s) -
S. D. Tyulebaev,
М. Д. Кадышева,
Л. Г. Сурундаева
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/839/3/032006
Subject(s) - allele , biology , genotype , gene , genetics , herd , allele frequency , polymorphism (computer science) , genetic marker , genotype frequency , zoology
The article presents the results of the analysis of animals of the Bredy meat type by the allele fund of erythrocyte antigens of blood groups and DNA - polymorphism of the GDF5 and TG5 genes, which are valuable for beef cattle. The studies were carried out on the basis of blood analysis of cows from three micropopulations belonging to well-known breeding enterprises in Russia. Alleles of blood groups were identified for all systems, and the frequency of their occurrence was shown. The work focuses on the ratio of homozygous and heterozygous genotypes, shows the degree of their displacement depending on the micropopulation, determines the indices of genetic similarity (I) and genetic distance (Dn) between micropopulations. The revealed levels of polymorphism of animals of the Bredy meat type for genes GDF5 and TG5 showed an insignificant frequency of occurrence of the desired genotypes, this indicator for the first gene was 8.7, and for the second - 4.3%. Comparison of the frequency of occurrence of the most common alleles of the EAB-system of blood groups of the herd, with the frequency of occurrence of genotypes for genes GDF5 and TG5 in a random sample of cows of the Bredy meat type, did not show any dependence of the polymorphic state of genes on the specific content of alleles.