Functional features of platelets in the Kostroma breed bulls aged 10-12 months
In the process of physiological development of productive animals and the maintenance of homeostasis have a prominent place belongs to the age dynamics of the activity of the hemostatic system in general and platelet components. It is clear that the normal development of the functional capacity of the organism producing animals is largely driven by the optimum characteristics of blood cells, especially platelet activity, causes the condition of liquid properties of blood in the first place in the capillaries required blood supply to the tissues, the optimum cardiac sufficient resistance to infectious diseases and the necessary metabolic rate. Purpose - to establish the dynamics of the parameters of platelet function in healthy calves Kostroma breed at the age of 10-12 months of life. At the end of the early ontogeny in bulls revealed the stability of the functional activity of platelets. Thus, platelet aggregation have remained unchanged between 10 and 12 months of life, which is obviously due to the achieved optimum adaptation to existing primary hemostasis environmental influences on the body. The basis for this lies largely constancy number of platelet receptors for von Willebrand factor, to various inducers aggregation and fibrinogen. Found stability functional response to platelet activators inevitably leads to the constancy of the number of circulating in the blood of animals aggregates of different sizes. This is undoubtedly an important adaptive significance for the maintenance of homeostasis in the microvasculature maturing calves.