PROBIOTIC FEED ADDITIVES - PERSPECTIVES OF RATIONAL FEEDING OF CALVES

To improve the adaptation of pancreatic microflora to changes in diets calves and for rational use feed, intensive cultivation, it is desirable change composition feed probiotic supplements according age animals. Each group responds differently live weight gain on additives. Feed supplement Immunobacterin-D containing Bacillus subtilis, licheniformis has a positive effect natural resistance, increases average daily preventive diseases digestive tract calves. But 2 months continuous feeding can cause suppression resistance some When baker's yeast added additive (B. B. 1 × 1010 CFU / g, Sascharomyces cerevisiae 109 g), dry form product makes possible with compound feed. The immunobacterin-D 3-month-old experimental animals clinical examination fatness coat condition looked better. Calves during this period increments 276 g previous month, arithmetic mean was 820 ± 180 current 1096 90 which indicates (especially live) productivity at age. For studies heifers farm lower gains weight, we received smaller percentage increase yeast. adding additives dose 40 20 350–400 kg animal had an first 500 17 second 440 30 control 414 12 20.8 6.3 % more than group. confirms pattern increasing additional gain. That is, higher gains, get growth from