Modern fast growing of crossbreed has a high genetic potential of productivity; and further pro-gress in enhancing of the efficiency of broiler pro-duction is impossible without the development of new technologies. The using of natural supple-ments in broilers' feeding, refusal from feeding by antibiotics for production of environmentally friendly products - these are the most important elements of such technologies. On this background, the great interest was the use of biologically active substanc-es, prebiotics and probiotics, one of which is the EM-Kurunga. The aim of this research was study-ing of the effect of feed concentrate EM-Kurunga on zoo technical, productive qualities and economic efficiency of the production of meat turkey-broilers. By the method of analogues there were formed two groups of turkeys, experimental group in addition to the basic ration received EM-Kurunga with water. At the result of researches, we found out that the use of the concentrate had a positive effect on the productivity of broilers: the preservation of the flock in the experimental group was greater than in the reference group by 7.0 %, the indexes of live weight was up to 3.0 %, meat productivity was up to 3.6 %. The use of the concentrate allowed to increase the production efficiency of turkey-broilers' meat in the experimental group by 1.2 %.