Abstract
The immunogenetic strucrure of Holstein cattle being imported from Germany and Hungary is determined. The presence of antigenes being met seldom – Z’ (EAA-locus), P2, T2, Q, I′, J′2, K′, P′, Y′, B′′ (EAB-locus), R1 (EAC- locus) and M (EAM-locus) is characteristic of the researched group of animals (1116 heads). Their summary frequency of being met made 17,64%. The antigenes – A2 (EAA-locus), G2, G3, Y2, E′2, E′3, G′, Q′ (EAB-locus), C1, C2, E, W, X2 (EAC-locus), F (EAF-locus), H′ (EAS-locus) are met with high frequency.They have been discovered in 40,05–98,39% of animals. Analysis of distribution of the genotypes in EAF-locus. pointed to the breach of genetic balance, that is caused by oversurplus of homozygous genotypes V/V and shortage of heterozygous F/V. Analysis of distribution of EAB-alleles exposed the high frequency of being met of the allele G2Y2Eʹ2Qʹ (q=0,2711), and also a presence in the researched group of animals the alleles typical for the black and white cattle, red steppe and other breeds of cattle. The level of homozygosity (Са) concerning EAB-locus. made 10,9%. The received materials. will be used in future for the improvement of selection and breeding work with the imported Holstein cattle.
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