IMMUNOGENETIC STRUCTURE OF MEAT BREEDS OF CATTLE BRED IN THE FAR EAST

Abstract

The genetic structure of the beef cattle breeding in the Far East relative to the erythrocytis antigenes frequency is determined as a result of the researches. In all, 2265 heads of animals of Hereford, Aberdeen-Angus, Kalmyk and Kazakh white-headed breeds have been researched. It is determined that all the researched breeds are characterized by high antigenes frequency A₂, Y₂, A?₂, C₁, C₂, E, W, X₂, F, V, L, H?, Z and low –  I₁, K?, B??, M, U, H??. The distinctive feature of every breed is: for Kalmyk cattle antigenes Z (EAA-locus) P₂, T₂, B?, O?, K? (EAB-locus), L? (EAC-locus) are met more often, p< 0,001; Aberdeen-angus cattle has been distincted by high frequency of antigenes Q (EAB-locus), U?₁ (EAS-locus), p<0,001 and low R₁ (EAC-locus), p<0,01; the low frequency O₁, O₂, Y? (EAB-locus), p<0,001 has been revealed by Hereford cattle; Kazakh white-headed has been distincted by high concentration of antigenes, J?₂ (EAB-locus) p<0,001, V (EAF-locus) and low – E?₃, Q? (EAB-locus), p<0,001. Analysis of the genetic likeness and the dendrogram showed the high genetic likeness between Kazakh white-headed and Hereford cattle. The lower genetic likeness with these breeds is characterized for Aberdeen-Angus cattle and Kalmyk cattle. This fact speaks about the formation of Kalmyk and Aberdeen-Angus breeds in another genetic balance conditions than Kazakh white-headed and Hereford cattle. The materials, received during the researches, will be used in a further perfection of the beef cattle selection in the Far East.