Comparative analysis of hemostasis indices of sheep and lambs obtained taking into account body temperature

Vologda State Dairy Farming Academy named after N.V. Vereshchagin, Vologda, Russia

^* Corresponding author: elenastkacheva@mail.ru

Abstract

This paper shows the results of the study of the effect of temperature on the rate of coagulation processes in the blood plasma of small ruminants. The aim of the work was to compare the results of the study of blood coagulation indicators of sheep and lambs of Romanov and Edilbaev breed, obtained using medical and veterinary coagulometer, taking into account the age of the animal and its body temperature. The study was conducted in the Vologda region. The following parameters of coagulogram were analyzed: thrombin time, prothrombin time, activated partial thromboplastin time, amount and activity of fibrinogen. It was found that at physiologic temperature on veterinary coagulometer in plasma of sheep and lambs there is an increase of prothrombin time by 8,54 s and 15,24 s respectively, at that correlation-regression and one-factor dispersion analysis shows a positive moderate relationship between prothrombin time and plasma incubation temperature (r=0,3). In the plasma of lambs at the study with the setting of physiological temperature on the veterinary coagulometer there is an increase in the level of fibrinogen and its activity by 0.35 g and 4.53 sec, respectively, Correlation-regression and one-factor dispersion analysis showed a reliable high positive relationship between fibrinogen level and plasma incubation temperature (r=0,9) and a reliable high negative relationship between fibrinogen activity and plasma incubation temperature (r= -0,9). In this regard, a veterinary coagulometer with the possibility of setting the necessary temperature for adequate assessment of hemostasiological processes in sheep of different age groups can be recommended.