Digestibility and growth performance in fingerlings of tilapia Oreochromis niloticus fed with diet containing high-carbohydrate ingredients

Apparent digestibility Coefficients (ADCs) of 4 raw materials (Corn, Millet, Sorghum and Fonio meals) and growth performance were determined for juvenile tilapia Oreochromis niloticus. A reference diet and 4 test diets (Corn, Millet, Sorghum and Fonio) each including 70 % of reference diet and 30 % of the raw material to be tested were formulated. After 7 weeks of feeding in hatchery of glass tanks (containing 50-L of water), faeces were sample for proximate analyses. Body weights of fish from each tank were recorded weekly. The highest ADCs of carbohydrate (96.15%) and energy (93.64 %) were obtained in fish fed with fonio. Maximum growth and feed utilization were observed in fish fed with control diet and corn. Among studied test ingredients, fonio presented the best digestible energy.