THE USE OF DRIED CARROT PROCESSING WASTE IN BROILER DIETS

Abstract

This study was carried out to evaluate the effect of using broiler diets containing dried carrot processing waste(DCW) on nutrients digestibility coefficients, growth performance, carcass traits, chemical analysis of chicks meat and economical value. A total number of 150 unsexed one-day-old Hubbard broiler chicks were used in the study and were assigned into five dietary treatments in three replicates of 10 chicks each. Five dietary levels of DCW (0, 5, 10, 15 and 20%) were used. The experimental period was for 8 weeks. No significant differences were detected in digestibility coefficients of dry matter, organic matter and nitrogen free extract among dietary treatments. Control and 5% DCW groups gave the same values for CP, EE and CF digestibility coefficients and apparent, true nitrogen balance and nitrogen retained percentage. Digestibility coefficients decreased with increasing the level of DCW in the broiler diets. During the whole experimental period broiler chicks given diets containing 0.0 or 5% DCW recorded the highest live weight (LBW) and body weight gain (BWG) as compared to the other levels of DCW. Feed consumption (FC) decreased with increasing dietary DCW level. Broiler chicks given control and 5% DCW diets showed better efficiency than the other groups all over experimental periods. There were no significant differences in relative weights of carcass traits, but gizzard weight (%) was insignificantly increased. Empty intestine weight (%) was significantly increased with increasing the level of DCW in broiler diets. Broilers fed diet containing 5% DCW had the highest values for the relative weight of breast and total meat when compared to the other levels of DCW and control diet. Broiler chicks received diet contained 5 and 10% DCW showed the higher values of ash content and protein % for meat carcasses than the other experimental groups. Ether extract % in the meat decreased with increasing dietary level of DCW. Addition of DCW in broiler diets decreased price of feed compared to the control feed. Economic efficiency %, relative economic efficiency and performance index were higher for the control group, followed by 5% DCW as compared to the other experimental groups. In general, these results indicate that using dried carrot processing waste (DCW) up to 5% in broiler diets enhances the productive performance and economic efficiency.