Improving the productive qualities of calves when growing with the use of probiotics

The search for ways to improve the productive qualities of farm animals is largely determined by the intensification of production. Industrial production of livestock products currently requires solving the issue of studying the factors affecting the productivity of animals in a short time. In this connection, the study of the formation of productive qualities of young animals under the influence of the use of probiotic additives in their growing is of practical interest. Scientific and production experience was carried out on young cattle of black-and-white breed during the dairy growing period. The use of probiotics had a positive effect on the productive qualities of calves. The young animals of the experimental group, who received the probiotic supplement "Probitox" in the diet in the amount of 7 grams per head per day for three weeks, starting from the 14th day of the calves' life, had a larger live weight at the end of the experiment by 3.7% compared to the animals of the control group, which were raised on a feeding diet adopted by the farm and corresponding to the norms of animal feeding by age periods. A similar pattern was noted in terms of calculated indicators - absolute, relative and average daily increases. In the chicks of the experimental group, they were higher in relation to the control group. The introduction of the probiotic complex "Probitox" did not have a negative effect on the body of experimental animals. Clinical and hematological parameters were within the regulatory limits. In addition, the biochemical parameters of the blood showed an improvement in the picture, which indicates an improvement in metabolism when using a probiotic. The increase in productive qualities could not but lead to an improvement in economic indicators - the use of probiotic Probitox in the cultivation of heifers increased the profitability of production by 7.6%.