HYGIENIC JUSTIFICATION OF RAISING BROILERS USING "GIMIZIM" MULTIENZYME PREPARATION
The article describes an experiment in Ak Bars of Pestretsy poultry farm, Pestrechinsky district, the Republic of Tatarstan, on broilers placed in two hen houses under the same conditions. The experimental group was fed with mixed fodder added "GIMIZIM" multienzyme preparation, containing complex of proteolytic, amylolytic, lypolytic, cellulolytic, pectolytic, and xylanase enzymes and having phytase activity. Since the third week of raising the chickens the facility air the number of microbes decreases by 6,4% and ammonia 5,4% due to reduction of droppings number in the experimental chickens for 6,1% and decrease of nitrogen for 4,4% and humidity for 8,8% in it comparing to the control groups because of increased forage digestibility. Introduction of "GIMIZIM" multienzyme preparation into chicken diet promotes increase in average daily gain of live weight, in comparison with the first control group which didn't get the preparation for 2,14%. Meanwhile, forage cost per 1 kg weight gain reduced by 2,5% in the second experimental group comparing the control one, and the chicken preservation increased by 2,6% accordingly. Digestion trial of chicken aged 36-42 days old revealed increase of protein uptake for 1,08%, fat - 10,66%, celluloses - 2,6% and nitrogen-free extractive substances - 3,6% accordingly, and also promoted nitrogen uptake for 2,46%, calcium - 4,81% and phosphorus - 2,33%. In experiment chicken droppings the NMR- relaxometry revealed molecular structures with higher local mobility that testifies a better digestion of forage nutrients by experiment chicken. Reduction in forage cost and increase in livestock livability promoted cost value cheapening for 6,1% and profitability increase for 6,6% in the experiment group comparing to the control ones.