Gray Ukrainian Сattle and Its Closely Related Forms
A. V. Kushnir, V. I. Glazko
Keywords: selection, gene pool, breed, productivity, origin
Pages: 495-506
Abstract
Data of previously performed investigations on the origin of the gray Ukrainian cattle and relatives in European countries are considered. Literature data on the biodiversity of exterior, phenotypic and productive indices of ecotypes and breed groups of gray Ukrainian cattle under different ecological and geographical conditions are presented. The proper experimental data on the differentiation on a number of genetic-biochemical systems of different groups of gray Ukrainian cattle bred under different ecologic-geographic conditions are presented. The analysis of the literature and experimental data shows that the level of average heterozygosis to a greater extend reflects the properties of ecological conditions of animal reproduction than their belonging to different breeds.
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