CHEMICAL COMPOSITION OF MILK PRODUCED BY HOLSTEIN COWS IN THE PERIOD OF ADAPTATION
The results of studies on the dynamics of chemical composition and technological qualities of milk produced by Holstein cows, brought from Holland, at the period of their adaption to climatic and economic conditions of Mid.Povolzhye are submitted in the article. As result of studies conducted it is established that the Holstein cows are distinguished by high quality of milk, the chemical structure of which has been significantly changed as dependent on the cows’ genotype by kappa-casein. In the process of adaptation the milk quality of cows of native reproduction has been improved but the genetic potential intrinsic to the Holstein breed has not been fully realized.