The effectiveness of probiotic use in the breeding of quails of the meat direction of productivity

Introduction. The problem of production of farm animals and poultry products in all countries of the world is very relevant today, since in recent decades the increase in population has stimulated an increase in the production of animal products. Poultry farming all over the world, including in Russia, is the most intensively developing branch of agriculture and occupies an important place in the total volume of food production of ani-mal origin. The main feeds for birds are grain-forage crops, such as wheat, corn and barley, which make up to 70 % of the weight of compound feeds. The purpose of the study. The purpose of this study, therefore, is to find the effectiveness of the use of the new probiotic “Probiolacˮduring different periods of quail ontogenesis. Mate-rial and methods. For this purpose, 5 groups of quails, 10 heads each, were formed. The first group served as a control and was kept on a regular diet. The second group received probiotic “Probiolac” at a dose of 0.2 % per unit of feed for 5 weeks, the third group received probiotic up to 4 weeks of age, the fourth group received pro-biotic up to 2 weeks of age and the fifth group received probiotic “Probiolacˮ for 1 week. Such indicators as the dynamics of live weight, safety, digestibility and digestibility of feed nutrients (protein, fat and fiber) were stud-ied. Research results, discussion. The analysis of live weight dynamics showed that on day 42, the body weight of quails in the 1st experimental group was 4.8 % higher compared to the control, in the second group − 5.5 %, in the third − 3.9 %, and in the fourth −3.7 %, respectively. The safety in the experimental groups was 100 %, in the control group 94 %. The addition of a probiotic to the diet of quails has reduced the need for feed. The balance experiment showed that the experimental groups showed an increase in the coefficient of digestibility of feed nutrients. Conclusion. Based on the experimental data obtained, it can be argued that in order to increase the productivity and safety of quail population, stimulate the metabolic processes of the poultry body by activating the enzymatic activity of intestinal bacteria, it is necessary to use a three-strain probiotic for at least the first two weeks of life.