IMMUNOGENETIC FEATURES OF CATTLE OF THE "ADUCHI" TYPE IN REPUBLIC OF KALMYKIA
The created meat type "Aduchi" (Angus × Kalmyk cross) has distinctive features in terms of blood groups from the purebred Kalmyk breed. The studies were carried out by conventional methods using serum-reagents for cattle according to 8 genetic systems. The results of immunogenetic studies made it possible to reveal the antigenic originality of animals of the created meat type. The purebred Kalmyk cattle had antigens B1, I1, I2, E'1, G ", R1, X1, C ', L', M, M ', which were absent in hybrid peers. And the detected antigens in the Aberdeen-Angus × Kalmyk crossbreed A '2, D', U, U' were absent in the analogues of the purebred Kalmyk breed. All three groups are characterized by a high frequency of such antigenic factors as: A1, A2, Ox, X2, F, H', Z, and antigenic factors P2 and B' were not detected in any group of animals. The meat type "Aduchi" has distinctive immunogenetic features from the cattle of the purebred Kalmyk breed.