EFFICIENCY BETULIN USAGEIN GROWING BROILER CHICKENS
To improve the productive performance of broiler chickens, increase production and reduce the cost of poultry products it is required not only to ensure a balanced feeding and maintaining the technology of production, but also the inclusion in the diet of birds unconventional supplements, biologically active substances, normalizing metabolism and improve the digestibility of nutrients feed. One of these dietary supplements is betulin extracted from birch bark, which has antioxidant and immune- modulatory properties. In this context, the aim of our research was to increase the productive and revealing exterior features of broiler chickens using betulin extract in the combined feed. Analysis of the data showed that by the end of the cultivation the highest waste of chickens was detected in the control group and constituted 5,6%. When you turn on betulin in poultry diet to 0,25% deaths fell to 2,8%. Live weight of broiler chickens in 3 experimental groups aged 42 days was 2349,68 g and was significantly higher than in control group. Birds treated betulin extract at 0,25 % by weight of the feed, the digestibility of protein and fat and 79,21 reached 80,56 %, which was superior to control group by 2.00 and 1,34 %, respectively. Cost of 1 kg of broiler meat in the new version was lower by 1,23 rubles, compared to the baseline, and was 70,85 rubles, at the level of profitability of 10.04%. The results of the production test showed that in growing broiler chickens, in order to improve efficiency and productive qualities of meat production, it is advisable to use as part of feed betulin extract in the amount of 0,25% by weight of the feed.