Biochemical indicators of mineral metabolism in the blood serum of highly productive cows according to lactation periods under different management methods

The authors of the present article have studied the biochemical composition of blood serum of highly productive cows at different lactation periods as well as in dry period, under tied-up and robotic keeping systems and have conducted a production experiment on the basis of an agricultural enterprise in the Vologda region within the framework the research work. The rapidly developing agro-industrial complex requires new approaches to the system of dairy cow feeding. The obtained data of biochemical blood analysis of highly productive cattle according to lactation periods and different types of management system are of practical importance for the preparation and adjustment of rations that meet the physiological needs of animals, prevent violations of metabolic biochemical processes, control health condition and prolong the animal productivity. The scientific novelty consists in searching for optimal content values of calcium, phosphorus, calcium-phosphorus ratio, acid capacity in the blood serum of highly productive animals in the conditions of the European North of the Russian Federation, in solving the scientific task of developing ways to improve the effectiveness of monitoring the content of these indicators in the blood serum of highly productive cows, regulating their concentrations, which is one of the most crucially important and vital processes. As a result, it becomes possible to promptly assess the effect of nutrients entering the blood in relation to the degree of metabolic tension.