Vol. 4, Issue 7, Part C (2018)

Abstract
This article presents data on the milk yield factor, milk yield per 100 kg of live weight from the calculation of the basis fat content (4%), total yield of milk fat and protein in milk in cows of different genotypic origin, i.е. purebred Holstein and black-and-white breeds, as well as in crosses of different genotype, obtained from their crossing. The obtained results of studies on the issues studied showed the superiority of cows belonging to different selections of the Holstein breed in comparison with the black-and-white varieties of the different genotypes. In particular, this was noted in cows of IV-experimental group, belonging to the German selection.