Enzyme preparations in compound feed for ducklings

Abstract

The paper presents the results of the enzyme preparations in various combinations influence on the dynamics of growth, development and slaughter quality of ducklings. Scientific and economic experiment was held in the Chuvash Republic. For the experiments, the control and 2 experimental groups of ducklings (50 animals each), were selected and formed. Ducklings of the 1st experimental group received enzyme preparations amilosubtilin in the amount of 0,05 kg/t and protosubtilin in the amount of 0,05 kg/t during the entire period of cultivation in combination with the feed. Ducklings of the 2nd experimental group of feed got enzyme preparations amilosubtilin in the amount of 0,1 kg/t and celloviridin in the amount of 0,075 kg/t. It was established that ducklings, who received enzyme preparations in addition to animal feed had increased growth energy throughout the experiment. By the end of the experiment, the live weight of the ducklings control group was - 3,424 kg, the first experimental group, who received enzyme preparations amylosubtilin in the amount of 0,05 kg/t and protosubtilin in the amount of 0,05 kg / t in addition to feed – 3,712 kg. In the second experimental group, live weight by the end of the experiment was - 3,804 kg, where ducklings received enzyme preparations amylosubtilin in the amount of 0,1 kg/t and celloviridine in the amount of 0,075 kg/t in addition to feed. The average daily gain in live weight of animals in the control group was 53,52 g, and in the first experimental group – 58,10 g, in the second – 59,56 g. The inclusion of a mixture of enzyme preparations in animal feed in experimental animals contributed to an increase in body length compared with the control by an average of 0,9 cm and 1,6 cm, the tarsus length by 2,5 cm and 4,3 cm, and the chest girth by 1,8 cm and 2,5 cm, respectively. Based on the measurements, body indexes were calculated and had similar values, but with a slight increase in the experimental groups: in terms of massiveness - by 3,16 % in the first and 7,12 % - in the second, in the wide-body index - by 3,84 % in the first and 4,54 % - in the second and by erisomia, respectively - by 2,51 % and 2,66 % compared to the control. Increasing the productivity of ducklings during the cultivation has affected the reduction of feed costs and the unit cost of production, which contributed to an increase in profits in the experimental groups. Thus, the cost of 1 kg of gain in the second experimental group compared with the control group decreased by 7.9 rubles. The profit per 1 kg of gain in the second experimental group compared with the control was more by 7.9 rubles or 22,6%. Compared with the first experimental group at 2.88 rubles, or by 8,3 %.