Effect of hypo-and hyperthermia on coagulation haemostasis of cows and hens in vitro

A coagulogram is the most important diagnostic method for assessing the physiological state of animals. Hyperthermia in blood plasma of cows results in hypercoagulation accompanied by shortening of the thrombin (TT) and prothrombin times (PT). Hypothermia activates the anticoagulation system. In chickens activation of blood clotting and a decrease in antithrombin activity were detected in both hyperthermia (46 °C) and hypothermia (18 °C). There is a negative correlation between coagulation parameters and incubation temperature in cow plasma, and only thrombin time is highly dependent on the temperature in chickens Comparing the reaction of coagulogram parameters of cows and chickens to changes in plasma incubation temperature, it is possible to note the uniformity of reactions of thrombin and activated partial thromboplastin time and completely different reactions of prothrombin time, fibrinogen and antithrombin activity in these animals.