PHYTOPREBIOTIC FOR INCREASING THE RESISTANCE OF CALVES
The absence in calves in the first weeks of life of a full-fledged intestinal microbiocenosis capable of providing colonization resistance of the intestine causes numerous disorders in the immune system. Phytoprebiotic is designed for dairy calves. Wild plants - large plantain (Plantago major L.), chamomile (Matricaria recutita L.), bird highlander (Polygonum aviculare L.), as well as glucose, fructose, beef pepsin, ascorbic acid, selenium and zinc in organic form are included in its composition. Scientific and industrial experience in testing the effectiveness of the additive was carried out in one of the pedigree plants of the Tambov region on black and white calves for 60 days. The calves of the control group received only the main diet. Animals of the experimental group from 3 to 30 days of age, in addition to the main diet, received a phytoprebiotic daily of 5 g per head twice a day individually with milk feed. Experience has shown that the use of phytoprebiotic feed additives increases the resistance of calves and helps to optimize the composition of resident digestive tract microorganisms. Mold fungi were not found in fecal samples from calves of the experimental group, and in the control samples they were present in the amount of 10<sup>2</sup> CFU / g. The level of gastrointestinal diseases decreased by 33.4% in experimental animals, the recovery period was decreased by a day. The gross increase in live weight of calves was higher by 9.0% (p ≤ 0.05), and the average daily increase by 9.4% (p ≤ 0.05) for the period of experimental feeding