Pronoza O. Productivity, Adaptability and Reproductive Function of Cows of the Ukrainian Red Dairy Breed Depending on the Age of the First Insemination

Object of study: the formation of productive traits, reproductive and adaptive capacity of cows of different ages first fruitful insemination. Objective: to justify the optimal age of first insemination of heifers Ukrainian Red dairy cattle and its effect on the formation of milk production, reproductive function and adaptive capacity in terms of the steppe zone of Ukraine. Methods: basic experimental method. When processing the results of research using set zootechnical, analytical, statistical, haematological and biochemical and economic methods that are generally accepted in breeding. Theoretical and practical results, in theoretical terms - depth knowledge about biological mechanisms influence the age of first insemination of heifers on their subsequent performance. In practical - set advisability first insemination heifers Ukrainian Red dairy cattle farms in terms of age 17.9...19.6 months, providing an additional value received production per cow from 734.81 to 1526.58 UAH. The novelty: for the first time in the conditions of steppe zone of Ukraine proved the most appropriate age of first insemination of heifers Ukrainian Red Dairy breed - 17.9...19.6 months., As an approach to increase milk production, reproductive function and their adaptive capacity on farms typical farms. Took the further development of dependence of physiological parameters and natural resistance of cows on the age and season, and milk production of cows and adaptive capacity of changing stereotypes and maintenance of milking in the herd during the transfer of milking three times in the maternity ward to double in the herd. New data on features exterior profile of cows depending on age of first insemination of cows morphological composition of the blood of all ages, and depending on the degree of yield and fat content in milk cows from that of natural resistance and humoral immunity. Degree of implementation: the results of studies introduced in LLC AF "Dniester" Artsyz district of Odessa region and used in the classroom at the Odessa State Agrarian University. Scope - livestock, including dairy cattle.