Immunogenetic characteristics of sires of different breeds at OAO «Barnaulskoe» Bull stud

Abstract

The purpose of the research was to study the frequency of erythrocyte antigens of 9 genetic systems, the number of genotypes and the frequency of alleles in the F-V system in sires of four breeds at the OAO “Barnaulskoe” Bull stud, as well as to establish indices of genetic similarity between them. The characteristics of 138 sires of Black-and-White breed, 103 of Red-and-White, 106 of Simmental and 270 sires of red breeds have been given. 53 antiserums were used in the tests. The high occurrence of blood factors A₂ (system A), B₂, G₂, O₁, Y₂, G’, O’ and Q’ (system B), C₂, E, W, X₂ (system C), H’ (system S) and Z (system Z) in sures of all four breeds ranged from 0,204 (O’ in sires of Red-and-White breed) to 0,825 (X₂ in the same breed). The frequency of the F antigen in all breeds was maximal and varied from 0,874 in sires of Red-and-White breed to 0,981 in sires of red breeds. On the contrary, the occurrence of blood factors B₁, I₁, I₂, P₁, P₂, Q, T₁, T₂, I’, J₂’, K’, P₁’, Y’, B” and R₁ was significantly lower and amounted to 0–0,130 in sires of Black-and–White breed, 0–0,087 in sires of Red-and-White breed, 0–0,094 in Simmental sires and 0,004–0,137 in sires of Red breeds. Sires of red breeds had all 53 antigens, Black-and-White sires did not have 8, Red-and-White sires did not have 11, and Simmental sires did not have 9 blood factors. There were no significant differences in the value of the genetic similarity index between the animals of the four breeds. However, there was a tendency to increase the similarity between the sires of Black-and-White and Simmental breeds on the one hand and the sires Red-and-White breed on the other (r=0,8837 and 0,8765). The least close breeds are Red-and-White and Simmental on the one hand and Red breeds on the other (r=0,8613 and 0,8585). This is also indicated by the occurrence of genotypes and alleles in the F-V genetic system. Thus, significant differences in the number of all genotypes and frequencies of alleles were revealed between sires of Simmental and Red breeds.

Content and variability of nitrogen metabolism in cattle of the Holstein breed under conditions of Western Siberia

“…Перспективы развития отрасли скотоводства невозможны без разведения высокопродуктивных пород крупного рогатого скота [1]. Голштинская порода обладает высокой молочной продуктивностью, адаптивными качествами, а также является одной из самых распространённых в мире [2][3][4][5][6].…”

“…Продуктивность крупного рогатого скота в хозяйствах тесно связана с количеством используемых высокопродуктивных животных, полученных от ценных быков-производителей разводимых пород [1].…”