Hemostatic activity of thrombocytes in calves during the phase of milk feeding

The adaptability of adult animals greatly depends on the early ontogenesis. Thrombocytes promote the best blood flow and an adequate blood supply in tissues and organs. The age dynamics of hemostatic activity of blood platelets was investigated in healthy Black-and-White calves at the phase of milk feeding. In the 11, 15, 20, 25 and 30 days old animals, the author detected the stable intensity of lipid peroxidation, the stable functioning of actin-myosin mechanism and antioxidant protection of thrombocytes, the stable content of adenosine phosphates and their pronounced secretion during activation and aggregation. The low functional activity of thrombocytes was registered both in vitro and in vivo. Apparently it depends on a constant activity of receptor and postreceptor mechanisms, determining a functional activity of thrombocytes under the growing influence of the environment in early animal ontogenesis.