Polishchuk T. The dependence economically useful cows characteristics on different preparation for summer keeping

The object of study: the technology of milk production in the transition from winter to summer. Purpose: to study the technology phase of preparation for the summer cows content and its influence on the milk yield, milk quality. Methods: livestock, laboratory, ethological, biometrics, and economic. Theoretical and practical results: in theory - broadening and deepening knowledge of the technology of preparation of cows for the summer content and its influence on the formation of milk productivity, quality and technological properties of milk, behavior, reproductive ability of cows. In practical - are designed to optimize the parameters of the technological elements of transition cows from winter to summer maintenance, it is proved that the proposed parameters of keeping cows in the transition period from winter to summer, help not only to stabilize the milk yield of cows, but also provide increased productivity. Novelty: the first zone Steppe and Polesie established pattern formation in milk production during the transition from winter to summer content. Scientifically sound processing methods and improved technology elements of milk, which help to reduce the loss of productivity of cows and material costs in the summer. First proposed parameters keeping cows in the transition period from winter to summer, to determine the stability and uniformity of lactation, the qualitative composition of milk cows during daylight saving content on different technologies. Developed scoring system thermal stability of milk. Proposed a comparative assessment "aligned" lactation curve of daily milk yield of cows. Based on the study of the behavior of cows at different technology content in the transition period indicated a number of process improvement techniques for their use. First recommendations on the implementation and use of technology phased training cows to summer content with different housing systems, which can supplement "industry rules of technological design" Cattle breeding enterprises (complexes, farms, small farms) "(VNTP-APK-01.05)." The degree of implementation: the results implemented in the SVK "Nadiya" s. Nova Greblya and STOV "Promin" s. Cherepashintsy Kalinowski region Vinnytsia region. Application areas - livestock, particularly cattle.