Probiotic feed additive BIO-SUBLICH effect on broiler chickens productivity indicators

The aim of the study is to investigate the effect of the probiotic supplement BIO-SUBLICH on the opti-mization of broiler chicken feeding in order to improve their performance. The experiment was carried out at the production and technological complex of the Belgorod State Agrarian University named after V.Ya. Gorin. Four groups of birds were formed, with 35 individuals in each group. The control group re-ceived the main diet without the probiotic feed supplement BIO-SUBLICH, the first experimental group re-ceived the main diet with the inclusion of BIO-SUBLICH in the amount of 0.17 % per 1 ton of compound feed, the second – 0.1 %, the third – 1.17 % per 1 ton of compound feed. Complete compound feed was supplied to the production and technological complex by the feed mill Plemptitsereproduktor Maysky (pro-duced by Belgrankorm). During the study, chickens were weighed twice: at the beginning of the experi-ment and with each change in the diet. During the experiment, the experimental groups where the new probiotic feed additive was used showed positive dynamics in terms of livestock survival from 94.2 to 100 %, live weight gain – by 2.86 % (1st experimental group), by 1.23 % (2nd experimental group), by 0.36 % (3rd experimental group) in relation to the control group (without the inclusion of BIO-SUBLICH). By the age of 39 days, the average daily gain of broiler chickens in the first experimental group exceeded the same indicator of the control group by 2.89 %, and the feed cost indicator was lower by 3.4 % than in the control group, which indicates an increase in the economic indicators of poultry meat production when using the probiotic feed additive BIO-SUBLICH.