Effect of a biogas-plant effluent-based pelleted diet on the growth of Oreochromis mossambicus fingerlings

Cattle-dung-based biogas-plant effluent was evaluated as a dietary ingredient in pelleted feed in place of rice bran for tilapia culture over a period of 42 days. The mean growth rate of fish (0.032 g individual−1 day−1) and muscle protein (39.28 mg 100 mg−1) showed no change when the biogas-plant effluent was used. It is recommended that dried biogas-plant effluent could take the place of rice bran in pelleted fish feed.