The relationship of paratypic factors with the level of glucose and ketone bodies in the blood of lactating and dry cows

Blood, as one of the most important systems of the body, plays an extremely important role in its vital activity, being the main transport system of metabolism and the interaction of organs with each other. Monitoring of blood biochemical parameters, especially during critical periods of the body’s vital activity, allows timely detection and correction of metabolic disorders in cattle. The research is aimed at studying the effect of various methods of management and milking on glucose and ketone body parameters in animals during different physiological periods. The analysis of the interrelationships between glucose and ketone levels makes it possible to assess the state of metabolism and identify the features of energy metabolism in various process approaches. The data obtained emphasize the importance of choosing optimal methods of management and milking to maintain the health and productivity of animals. The concentration of glucose in the blood serum of experimental cows was excessive in almost all periods, exceeding reference values by 2-13%. The concentration of ketone bodies in comparison with physiological norms in all the researched periods during tie-up and loose housing, milking in the milking parlor and in the milk pipeline is 3-24% below the minimum level, and in the tie-up housing a greater decrease of 1-12% is observed. The general state of energy metabolism in the herd is at an unsatisfactory level. All experimental animals, regardless of the method of management and milking, the physiological state and stage of lactation, have insulin resistance, which leads to the development of type II diabetes mellitus.