Physiological dynamics of anti-collection and fibrinolysis systems in cattle young people during food change

During the first three phases of early ontogenesis, calves showed an increase in anticoagulation and fibrinolysis systems. In the process of changing the composition of the consumed feed in calves in early ontogenesis, a gradual increase in their plasma levels of antithrombin III, plasminogen, protein C level and a decrease in a2 antiplasmin with pronounced functionally unfavorable changes in their activity in the region of 45 days with their further rapid return to a level close to the level characteristic of the onset of the phase of milk-vegetable nutrition. The development of these changes in calves preserves the optimum fluid characteristics of the blood, its rheology and helps to ensure the normal metabolism of their tissues. Upcoming changes in the parameters of anticoagulation and fibrinolysis during the transition from the consumption of one composition of food to another stimulate the calf’s adaptation process and increase their overall resistance to environmental factors.