Exogenous xylanase improves growth, protein digestibility and digestive enzymes activities in Nile tilapia, Oreochromis niloticus fed different ratios of fish meal to sunflower meal Effect of Silybum marianum seeds as a feed additive on growth performance, serum biochemical indices, antioxidant status, and gene expression of Nile tilapia, Oreochromis niloticus (L.) fingerlings Complexity of carbon sources and the impact on biofloc integrity and quality in tilapia (Oreochromis niloticus) tanks The effect of dietary sericite on growth performance, digestive enzymes activity, gut microbiota and haematological parameters of Nile tilapia, Oreochromis niloticus (L.) fingerlings The use of bromelain as a feed additive in fish diets: Growth performance, intestinal morphology, digestive enzyme and immune response of juvenile Sterlet (Acipenser ruthenus)