Blood indicators of dry cows before and after administration of a drug STEMB

Objective: To determine the effect of a drug STEMB, which is a biostimulating tissue preparation based on chicken embryos, on the morpho-biochemical blood values of dry cows. Methods: The study was conducted on 60 Holstein cows, which were divided into three groups (group 1, group 2, and group 3), with 20 cows in each group. During the experiment, all animals in each group were subjected to the same condition of feeding and maintenance. The experimental animals were administered with the STEMB drug three times subcutaneously at an interval of 7 d within 30 d before calving. Group 1 were given 0.050 mL/kg body weight; group 2 were given 0.075 mL/kg body weight; group 3 were given 0.100 mL/kg body weight. Results: STEMB at 0.075 mL/kg body weight improved the blood cell composition, increasing the erythrocytes, hemoglobin, leukocytes, hemoglobin content, the total protein, albumins, alpha globulins, and gamma globulins. It reduced the beta-globulin index and provided a threshold level for the enzymes alanine aminotransferase, aspartate aminotransferase, and A, M, G immunoglobulins. Conclusions: Use of the STEMB drug with a dose of 0.075 mL/kg body weight given subcutaneously three times at an interval of 7 d within 30 d before delivery is optimal for the prevention of complications during calving and postpartum periods, thereby providing an improvement in the blood cell composition

Increase in reproductive ability of high-producing cows, and qualitative parameters of their offspring, under conditions of intensive milk production

Objective: To study the methods of increasing the reproductive qualities and indices of viability in the offspring of Holstein cows under conditions of intensive milk production. Methods: Studies were conducted on 3 groups of Holstein cows with 30 heads in each group. Animals of the experimental groups had a different length physiological period. The study focused on experimental groups of animals: the reproductive indicators, the viability of newborn calves, and their growth rate. All the digital materials of the experimental data were processed by the method of variation statistics for the significance of the difference of the compared parameters using the Student’s criterion, adopted in biology and zootechnics. Results: Studies found that reduction of the duration of the service period, along with a simultaneous increase in the inter-lactation period to 80-90 days, increased the reproductive capacity of the cows, and enhances the viability of the offspring compared with their peers. Conclusions: The study revealed the optimal duration of the physiological periods in high- producing cows under conditions of intensive milk production technology