WAY TO IMPROVE THE NUTRITIONAL VALUE AND SANITARY AND HYGIENIC QUALITIES OF BROILER MEAT DURING THE DETOXIFICATION OF HEAVY METALS

Abstract

Specialists in poultry nutrition are researching the proper selection of feed biologically active additives with high sorption properties and enzyme preparations. They are able in the digestive tract of poultry to firmly bind salts of heavy metals and remove them from the body. The aim of the research - is to substantiate experimentally the rational use of feed additives of sorbent Elitox and multi-enzyme complex Khostazim C-500 in doses of 0,5 kg/t feed (both separately and in the complex) in diets of broiler chickens based on barley and sunflower oilcake for detoxification of heavy metals and optimization of consumer properties of poultry meat. The authors found that the joint feeding of the sorbent and the multi-enzyme complex provided the best productive effect. The chickens of the 4th experimental group were ahead of the control analogs in terms of slaughter parameters due to the elimination of xenobiotics and weight of half-gutted carcass by 10.3% (P<0.05), gutted - by 10.3% (P><0.05) and the value of slaughter yield - by 0.62%. In meat chickens of this group, the nutritional properties of meat improved by increasing the proportion of dry matter in femur and breast muscle samples by 1.07 (P><0.05) and 1.11 % (P><0.05), Protein - by 1,08 (P><0,05) and 1,10 (P><0,05) at simultaneous reduction of fat concentration - by 0,48 (P><0,05) and 0,49 % (P><0,05) correspondingly, and also due to increase of protein-vitamin concentrate value by 15,96 % (P><0,05). Compared with the control analogs in poultry of the 4th group, an increase in the environmental safety of meat due to a decrease in the concentration of zinc ions in the thigh and breast muscle samples by 3.16 (P><0.05) and 3.52 (P><0.05) times, cadmium by 3.60 (P><0.05) and 3.81 (P><0.05), lead by 3.29 (P><0.05) and 4.00 (P><0.05) times respectively was noted.>˂0.05), gutted - by 10.3% (P˂0.05) and the value of slaughter yield - by 0.62%. In meat chickens of this group, the nutritional properties of meat improved by increasing the proportion of dry matter in femur and breast muscle samples by 1.07 (P˂0.05) and 1.11 % (P˂0.05), Protein - by 1,08 (P˂0,05) and 1,10 (P˂0,05) at simultaneous reduction of fat concentration - by 0,48 (P˂0,05) and 0,49 % (P˂0,05) correspondingly, and also due to increase of protein-vitamin concentrate value by 15,96 % (P˂0,05). Compared with the control analogs in poultry of the 4th group, an increase in the environmental safety of meat due to a decrease in the concentration of zinc ions in the thigh and breast muscle samples by 3.16 (P˂0.05) and 3.52 (P˂0.05) times, cadmium by 3.60 (P˂0.05) and 3.81 (P˂0.05), lead by 3.29 (P˂0.05) and 4.00 (P˂0.05) times respectively was noted.