Effect of feeding extruded diets containing fermented fish and poultry offals on growth and meat quality of broiler chickens.

摘要

The use of extruded feeds containing fermented fish viscera silage (FVS) and poultry intestine silage (PIS) in the diets of chickens was examined. Control diets containing 8% fish meal and test diets with 50% of the fish meal replaced by FVS and PISwere fed to 90, day-old chicks in triplicate, for 8 weeks. Proximate composition of the diets used is presented. Feed intake of chickens given diets A and B was higher than those given the control diet. Silage diets also resulted in better feed conversion efficiency with values of 2.12, 2.27 and 2.62 for FVS, PIS and control diets, respectively. Carcass yield and muscle composition were not influenced by diets. Feed intake was 19.4 and 16.7% higher in FVS and PIS, respectively, compared with the control. Feed conversion efficiency of silage diets was better (2.12 for FVS, 2.27 for PIS and 2.62 for fish meal diets) resulting in better growth. Carcass yield (69.2-70.2%), muscle composition and organ meat were not influenced by diet formulations. Fishy taint was observed in cooked muscle from chickens fed on FVS and fish meal; muscle from chickens fed on PIS were rated the best due to the absence of fishy taint.