Effectiveness of probiotics Provagen and Provitol for calves

The purpose of the research was to study the effectiveness of the use of probiotics in the technology of raising young cattle in the conditions of JSC Orlovskoye for breeding. Two products of domestic production were selected for the studies, having a similar effect, but containing different types of bacteria: "Provagen," consisting of strains Bacillus Licheniformis VKM V-2414 and Bacillus Subtills VKM V-2287 and Provitol, consisting of a strain of bacteria Enterococcus faecium 1-35 and essential garlic, eucalyptus, rosemary and thyme oils. Eighteen female calves of Holstein breed by birth were selected for scientific and economic experience in the conditions of JSC Orlovskoye for tribal work, of which three groups of six heads each were formed by the method of par-analogues. Animals of the control group received a diet taken on the farm without addition of probiotics. Probiotic preparations "Provagen" in the amount of 5 g per head per day and "Provitol" in the amount of 10 g per head per day were added to milk feeds of calves of 2 and 3 experimental groups, respectively. As a result of the studies, it was established that the use of the probiotic preparation "Provitol" for calves at a dose of 10 g per head per day for 60 days allows to increase the living mass of calves by 1.3% with reliable differences. Absolute and average daily growth was by 2.8%. Relative increase was by 1.33%. The use of the probiotic Provagen allows to reduce the cost of 1 kg. A 6.7% increase was observed in live weight. Despite the increase in the absolute growth in live weight when using the probiotic drug Provitol, the cost of 1 kg growth of young cattle increases by 0.6%.