The effectiveness of feeding broiler chickens using drugs based on oligosaccharides

Abstract

Russian and foreign scientists and farmers have found that the use of feed antibiotics for prevention purposes is unjustifi ed and can have a negative impact on the immunity of a man who uses poultry products containing an excessive amount of such drugs in his diet. Of great scientific and practical importance is the development and justifi cation of the use of new approaches in poultry the physiological state, productivity, and quality of meat products of broiler chickens when replacing feed antibiotics in their diet with new, alternative drugs Safmannan and Immunosan containing oligosaccharides of dried cell walls of inactivated yeast Saccharomyces Cerevisiae. The purpose of the research was to evaluate the feeding of broiler chickens using drugs based on oligosaccharides. The inclusion of Safmannan and Immunosan drugs in the compound feed instead of feed antibiotics allowed to increase: the digestibility of dry matter in the body of broiler chickens by 4,3 and 5,1 abs.%, the digestibility of raw fat by 9,5 and 13,2 abs.%, the amount of metabolic energy by 3,1 and 3,8 %, the use of nitrogen – by 8,4 and 3,2 abs.%, the use of calcium by 20,0 and 23,6 abs.%, respectively, compared with the control. The use of Safmannan and Immunosan drugs was accompanied by the increase in live weight in broiler cocks by 1,3 and 0,06 % by the end of fattening, in broiler chickens by 3,4 (p < 0,05) and 0,1 %; the increase in the slaughter yield of the gutted carcass by 2,3 and 2,0 abs.%, the number of muscles in the carcass by 8,1 and 10,2 abs.%, respectively. The level of profi tability of meat production of broiler chickens in the group where Safmannan was fed instead of feed antibiotics exceeded the base variant by 6,8 abs.%, and in the group of broiler chickens fed Immunosan, it was inferior to the base value by 3,4 abs.%, while corresponding to the level of profi tability at the poultry farm (39–40 %).