Effects of dietary Jatropha gossypiifolia leaves extract on growth performance, antioxidant capacity, immune response, and disease resistance of African sharptooth catfish ( Clarias gariepinus ) infected with Aeromonas hydrophila

This study investigated the effects of Jatropha gossypiifolia leaf extract (JGE) on the performance and immune response of African sharptooth catfish. Fish (6.43 ± 0.26 g, n = 450, 30/replicate) were fed diets supplemented with 0, 0.5, 1.0, 1.5, or 2.0 g JGE/kg in triplicate for 84 days. Thereafter, the fish were injected with Aeromonas hydrophila and observed for 14 days. Fish fed 1.0–1.5 g JGE had higher (P 0.05). The post-challenge fish fed JGE-supplemented diets had higher lysozyme, phagocytic, and respiratory burst activities and survival than the control treatment.