Optimization of dietary pyridoxine improved growth performance, hematological indices, antioxidant capacity, intestinal enzyme activity, non-specific immune response, and liver pyridoxine concentration of fingerling major carp Catla catla (Hamilton)

The current research work was undertaken to evaluate the requirement of fingerling Catla catla (3.7 ± 0.5 g) for dietary pyridoxine. Triplicate groups of fingerling were fed casein-gelatin based iso-nitrogenous and isocaloric diets (350 g/kg Crude Protein; 16.72 Kj/g Gross Energy) containing eight different levels of pyridoxine (0, 0.5, 1, 2, 4, 6, 8 and 10 mg/kg diet) to satiation for 16 weeks. All the growth parameters were positively affected by increasing concentrations of dietary pyridoxine up to 4 mg/kg diet. Erythrocyte (RBC), hematocrit (Ht), hemoglobin (Hb), alanine (ALT) and aspartate aminotransferase (AST) activities were significantly (P