PHYSIOLOGICAL ASPECTS OF PLATELET-DERIVED ACTIVITY IN CALVES FIRST YEAR OF LIFE IN THE CENTRAL BLACK EARTH
Optimum functional characteristics of the whole speaker largely regulated hemostasis vascular functional activity of blood cells, including platelets. Hemostasis seriously determines the state of blood rheology level of flow to tissues, metabolism in the heart muscle, a condition of resistance to infections, growth processes in the musculoskeletal system in health and disease and in a corrective interference. The goal - to find out the dynamics of the parameters of platelet function in healthy calves during the first year of life. Examination was carried out on healthy calves: 67 newborn animals, 22 calves aged 30 days, 21 Calf aged 3 months and 23 years of age in the animal. We used biochemical, hematological, and statistical methods. Platelet aggregation with all inductors calves remained stable for the newborn. At older ages, it was growing, reaching maximum values for the year. The found regularities confirmed intravascular platelet activity. Number of active forms of platelets after the neonatal phase gradually increased, reaching a peak-to-year life. During the early ontogeny of calves on the background of their growth increases platelet activity, which increases the number of activated forms in the bloodstream, helping to increase the amount of freely circulating units, which is important adaptive value in response to environmental effects on the animals.