Increase of immunocompetent properties of cow colostrum and passive immunity of calves

The aim of this work was to evaluate the effect of immunostimulating drugs Salus-P-E and Bovistim-K on the quality of colostrum and the immune status of calves after drinking colostrum. The research results showed that the colostrum of cows of the 1st and 2nd experimental groups contained more immunoglobulins than control samples by 26.9 and 31.2 %; total protein - by 3.08 and 3.32 %; the level of caseins - by 0.34 and 0.22 %, respectively. Against the background of immunocorrection of deep-calving mother cows, there is an increase in the amount of hemoglobin, total protein, reserve alkalinity and certain changes in the ratio of protein fractions of the blood of newborn calves. In the first day of life, an increase in the blood serum of calves of the 1st and 2nd experimental groups compared with the control was found: albumin by 7.9 and 8.4 %; а-globulins -by 18.6 and 15.7 %, в-globulins - by 22.1 and 16.9 %, Y-globulins by 24.4 and 21.4 %; respectively. Drinking high-quality colostrum (Brix over 24) contributed to an increase in average daily gains in calves of the 1st and 2nd experimental groups by 18.2 and 20.2 %. Preparations Salus-P-E and Bovistim-K increase the immunocompetent properties of colostrum, which contributes to the formation of a high level of colostral immunity in the body of newborn calves, reducing morbidity and improving growth and survival rates.