Growth Performance and Carcass Quality in Nile Tilapia (Oreochromis niloticus): Supplemented Acacia mangiumMeal andFibrolytic Enzyme in Diets

Abstract

The experiment was conducted to investigate the effect of supplemental Acacia mangium Leaf meal (AM) andfibrolytic enzyme in diets on growth performance and carcass quality of juvenile Nile Tilapia. The experimental design was
CRD with 6 treatments and 3 replicates of 20 fishes. Treatment 1 was a control unit (containing 0% AM). Treatments 2 to 6 (containing 20% AM) were included with different level of fibolytic enzyme at 0, 3, 9, 15 and 21 g/kg of diets respectively. The fish (with the initial average weight 0.25 g) were raised in plastic tanks (500 liters) for 14 weeks. Results indicated that final weight, final length, weight gain, length gain, ADG, SGR, FCR, FER and PER were the best in treatment 1 (control) significant different (p < 0.05) with other treatment. While survival rate and feed intake were not significant differences (p> 0.05) in all treatment. The carcass quality in parameters % carcass, % yield, HSI, IFR, stomach weight, body depth and body width were not significant differences (p > 0.05) in all treatment. But the result of average intestine length was
decreasing trend significant difference (p < 0.05) in higher levels of fibolytic enzymes in diets