Economic efficiency of Sinoestrol-2% used for down-calving cows to stimulate non-specific resistance in newborn calves

Abstract

Abstract This article assesses the economic efficiency of using Synoestrol-2% to down-calving cows for stimulate colostral immunity and non-specific resistance in newborn calves. Use of the drug positively affected the health of calves. At the same time, the immuno-biochemical and morphological composition of the blood in newborn calves improved to the first day after born: increased the level of total protein for 9.75% (p<0.05) compared to the control group of calves, albumins – 13.7% (p<0.05), alpha-globulins – 31% (p<0.05), gamma globulins – 21.8% (p<0.05), number of leukocyte increased for 17.2% (p<0.05). Ten days after birth, the content of alpha- and gamma- globulin decreased in the calves of the control and experimental groups, but it was significantly higher in the calves of the experimental group. The number of leukocytes was higher in the calves of the experimental group, mainly due to neutrophils. The first day after birth bactericidal activity of the blood serum, lysozyme activity of the blood serum, neutrophil phagocytic rate was higher compared with similar indicators calves of control group. The incidence of dyspepsia of calves of the experimental group decreased by 1.3 times, the duration of the disease was shorter by 1.7 days compared to calves of the control group. The economic efficiency of the use of the drug Sinoestrol-2% to cows was 3.12 rubles per 1 ruble of expenses.