EFFICIENCY OF VARIOUS BIOLOGICALLY ACTIVE ADDITIVES IN MEAT BIRDS’ FEEDING
The necessity of studying the effect on the birds’ body a qualitative change in the nature of fodder when using fodder means of the local production and preparations of new generation is relevant. The studies were carried out with meat chickens «Ross-308» in conditions of Prigorodny district in North Ossetia-Alania. By the analogue scale healthy conditioned chickens of diurnal age were divided into 4 groups of 200 animals each. Experiments were conducted according to the following scheme: in the first experiment, the meat chickens in the control group were fed the basic diet (mixed feed composed of grain ingredients of local production with a predominance of barley grain) and probiotic feed preparation, respectively, at doses of 750; 1000 and 1250 g/ton introduced into the mixed feed of chickens in test groups. In the second experiment broiler chickens of the first test group in addition to the basic diet were fed multienzyme complex protosubtilin G3x at a dose of 70 g/t, the 2nd test group - multienzyme complex Cellolux-F at a dose of 100 g/t and the 3rd test group - probiotic feed additive «Sporotermin» at a dose of 1000 g/t feed. In the third scientific-economic experiment the first test group in addition to the basic diet was fed the preparation Cellolux-F at a dose of 100 g/t, the second test group - preparations «Sporotermin» at a dose of 1000 g/t with protosubtilin G3x at a dose of 70 g/t and the third test group - the combination of multienzyme complexes protosubtilin G3x and Cellolux-F with the preparation «Sporotermin» in the studied doses. The results of the third experiment showed that broiler chickens in the third test group to the end of growing exceeded the live weight of their controls by 14.8%, and live weight gain on average for an experiment - by 15.1% that at slaughter exceeded mass indices of semi-eviscerated carcass - by 17.2%, the mass of the eviscerated carcass - 17.7% and slaughter yield - 1.6%.