CHARACTERISTIC OF THE BLACK-AND-WHITE CATTLE IN ACCORDANCE WITH THE EAB-LOCUS OF BLOOD GROUPS

Abstract

In this publication the materials of studying of distribution of EAB-locus alleles, blood groups of black-white cattle, breeding in 12 agriculturae enterprises of  Khabarovsk territory are presented. In all 7109 cow^’s blood groups have been studied. 92 EAB-alleles have been exposed by family-genetic analysis. 16 alleles with  different frequency meet at the same time in all studying herds, out of them alleles G₂Y₂E?₂Q?, I₁(I₂) and «b» meet with high frequency. The big number of rare EAB-alleles, typical for the cattle of red, brown and pale-yellow-motley roots is exposed: B₂G₂O₂Y₂B?E?₃G?O?Y?G??, B₂G₂Y₂Е?₂, B₂Q, G₂O₁Q?, I₁O₁, O₁Y₂Q?, O₁G??, P₂Q, Y₂D?G??, G?O?, this number includes Kholmogorsky and Simmentalsky cattle O₂Y₂D?G?G??, O₁G??, Y₂E?₃D?G?I?Q?, B₂G₂, B₂G₂B?O?, G₂I₁O₁I?, G₂O₁Y₂D?, G₂T₂Y₂B?D?G?O?Y?B??, I₂E?₃G??, Y₂О?, D?G?I?Q?. The row of original alleles do not meet of animals of other breeds: B₂I₁T₁B??, B₂I₂E?₃J?₂Y?B??G??, B₂T₂Y₂B?D?B??G??,  B₂Y₂E?₃G?I?Q?Y?B??, I₂E?₂I?Q?, B?G?I?O?. The minimum level of homozigotness is discovered of animals of agriculturae enterprises «Garovskoye» (С_а=5,6), maximum – of «Khorpinskoye» (С_а=23,7) and «Kotikovo» (С_а=20,1). The highest genetic likeness is determined between animals of agricultural enterprises «Poletnoye» and «Avangard» (r=0.965). Claster analysis exposed division of studying herds on three clasters, and it visually reflected genetic separation of herds majority.