OPTIMIZATION OF FEEDING DUCKS OF THE «BLAGOVARSKY» CROSS: ZOOTECHNICAL AND MEAT INDICATORS

Abstract

The study examines the influence of enzyme supplements on the productivity and meat qualities of replacement ducks of the «Blagovarsky» cross. The experiment was conducted on day‑old ducklings divided into control and experimental groups. Birds in the experimental group received a diet with an enzyme supplement, while the control group was fed without it. Feeding continued until the ducks reached 26 weeks of age - the onset of egg‑laying period. During the study, live weight at 8 and 26 weeks, absolute and average daily gain, feed consumption per 1 kg of gain, flock survival rate, and the yield of breeding females were evaluated. Additionally, a control slaughter and anatomical dressing of carcasses at 26 weeks were performed, along with an analysis of the chemical composition and energy value of the meat. The results showed that enzyme supplements significantly increase live weight: at 26 weeks, the difference compared to the control was 369.9 g. Absolute gain in the experimental group was 29% higher, and average daily gain was 6.69 g versus 5.1 g in the control. Feed consumption per 1 kg of gain decreased by 8.4%, flock survival increased by 2.5%, and the yield of breeding females rose by 6.2%. Moreover, meat characteristics improved: the weight of dressed carcass increased by 315.4 g, and muscle mass by 156.1 g. The energy value of the meat increased by 4.4%, and the ratio of edible to inedible parts improved by 6.8%. The obtained data confirm that the use of enzyme supplements optimizes nutrient absorption, enhances productivity, and improves the profitability of commercial poultry farming.