Genetic similarity of Kalmyk cattle in breeding farms of the Republic of Kalmykia

Aim. Comparison of the gene Pool of Kalmyk cattle of the leading breeding reproducers of the Republic of Kalmykia. Materials and Methods. The research material was the whole blood of Kalmyk cattle. Blood groups were determined by standard Neimann-Sorenson serological tests using 30 monospecific sera. Results. In total, more than two thousand heads were tested. Based on the results of an immunogenetic study of 30 antigens of seven systems, the frequency of occurrence of antigens was calculated. Studies have shown that there are high and low rates of occurrence common to all farms. The difference in the frequency of antigens was that the "Altair" breeding agent is significantly different from the others. So, in it more than half of the antigens occur with the lowest frequency, almost the same indicators in the SEC PR "Burugshun". In the SEC PR "Hoshud", on the contrary, the largest number of antigens with a high frequency of occurrence. Conclusion. The proportion of animals with A1, A2, B2, E’3, G”, O’, Z antigens is high, the level of O4, C2, L’ is quite low. The exchange of breeding material can be recommended, depending on the increase or decrease in the frequency of antigens.