Physiological features of platelet hemostasis in newborn calves of Yaroslavl breed

The functional state of platelets in cattle can vary depending on many factors external and internal environment. Of great interest is the status of their activity at the beginning of ontogenesis, which may vary in different species of animals. The aim of this work is to find out the activity of platelets in newborn calves in the Yaroslavl breed. The study was conducted on 34 of the Yaroslavl breed calves obtained from healthy cows after 2-3 of pregnancy. All calves were examined for the planning of 1-2, 3-4, 5-6, 7-8 and 9-10 day of their lives. The applied biochemical, hematological and statistical methods of research. The examined calves during the neonatal phase, a tendency to increased activity of platelet aggregation in response to all tested inducers. The number of discoid platelets in the blood of calves of the Yaroslavl breed experienced a tendency to decrease during the observation period. The number of victims of platelet activation during the observation they have increased by 10...