Utilization of dry distillers wheat grain for fattening chickens broilers | Използване на сух спирторен остатък от пшеница при угояване на пилета бройлери

The experiment was carried out with 50 preliminary sexed one-day-old chickens of both sexes in a control and experimental group. The chickens were obtained from the gene pool lines of the Poultry Hybrid Center. The rearing was in a group up to 49 days of age with constant access - ad libitum to combined forage, corresponding to their age and category. The control group chicken received the traditional combined forage for the category, and the experimental ones – combined forage with 3 – 6 – 9 % dry distillers grain - DDG and 6–12-18% DDG. During the experiment the chicken live weight at 1, 14, 28, 42 and 49 days of age was measured. The group forage consumption and its utilization were measured for the periods from the hatching to 14 days of age, from 14 to 28 days, from 28 to 42 and from 42 to 49 days of age. At the end of the experimental period a slaughter analysis was performed on eight characteristics after 12 h non-feeding on three male and female chickens with an average live weight for the group. On this basis the slaughter yield and the proportion between the different body parts were calculated. The inclusion of 3 – 6 – 9 % DDG and 6–12-18% DDG to the combined forage for broiler chicken fed up to 49 days of age led to a significant increase in the live weight compared to the control. The consumption of forage per 1 kg gain during the whole period was with 4.58% and 9.58% lower respectively for the female and male chicken from the second experimental group and with 7.90% and 13.69% respectively for the third experimental group. The difference between the two experimental groups was 3.48% for females and 4.55% for males. Feeding broiler chickens with combined forages with a different portion of DDG to 49 days of age resulted in higher weight of the oven-ready carcasses - bratfertig, thighs, wings, breasts, and giblets. Feeding broiler chickens in the finishing period with combined forages containing 3-6-9% DDG cost BGN 44.76 less per ton, while feeding with forages containing 6–12-18% DDG cost up to BGN 95.68 less per ton as compared to the control group. Feeding broiler chickens in the finishing period with combined forages containing 3-6-9% DDG could decrease the combined forage with BGN 44.76 per ton, or with up to BGN 95.68 per ton for forages containing 6–12-18% DDG.