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 < 0.05) affected and increased up to 4 mg pyridoxine per kg diet. Thiobarbituric acid reactive substances (TBARS) values were found to be highest in fish fed basal diet which decreased with the increase of dietary pyridoxine up to 4 mg/kg whereas, liver superoxide dismutase (SOD) and catalase (CAT) activities increased with incremental levels of dietary pyridoxine up to 4 mg/kg diet. Intestinal protease, amylase and lipase activities significantly (P < 0.05) increased as the amounts of dietary pyridoxine increased up to 4 mg/kg and then leveled off. Fish fed 4 mg/kg pyridoxine reflected significantly higher (P < 0.05) lysozyme, tissue serum protein and alkaline phosphatase activities than fish fed the pyridoxine-deficient diets. However, liver saturation was achieved in fish fed 8 mg pyridoxine per kg diet. Broken-line regression analysis of growth parameters, RNA/DNA ratio, SOD, protease, lysozyme and the liver pyridoxine concentration data against varying levels of dietary pyridoxine indicated the requirement in the range of 3.20–6.87 mg/kg.

当前的研究工作用于评估膳食吡ido醇对鱼种Catla catla（3.7±0.5 g）的需求。一式三份的鱼种进食酪蛋白-明胶等氮和等热量饮食（350 g / kg粗蛋白； 16.72 Kj / g总能量），其中包含八种不同水平的吡ido醇（0、0.5、1、2、4、6、6） 8和10 mg / kg的饮食）至饱食16周。饮食中吡ido醇的浓度增加至4 mg / kg饮食对所有生长参数均产生积极影响。红细胞（RBC），血细胞比容（Ht），血红蛋白（Hb），丙氨酸（ALT）和天冬氨酸转氨酶（AST）的活性显着（P （<0.05）会影响并增加至每公斤饮食4毫克吡ido醇。基础饲料中鱼的硫代巴比妥酸反应性物质（TBARS）值最高，随饲料中吡ido醇含量增加至4 mg / kg的增加而降低，而肝脏超氧化物歧化酶（SOD）和过氧化氢酶（CAT）活性则随着水平的增加而增加饮食中的吡ido醇最高至4 mg / kg饮食。 随着饮食中吡ido醇含量的增加，肠道蛋白酶，淀粉酶和脂肪酶的活性显着增加（P <0.05），直至达到4 mg / kg，然后趋于平稳。饲喂4 mg / kg吡ido醇的鱼反映出明显更高（P <0.05）比喂食吡ido醇缺乏饮食的鱼的溶菌酶，组织血清蛋白和碱性磷酸酶活性高。然而，每公斤饲料饲喂8 mg吡ido醇的鱼达到了肝脏饱和。生长参数，RNA / DNA比率，SOD，蛋白酶，溶菌酶和肝脏吡ine醇浓度数据相对于不同饮食级吡ido醇水平的折线回归分析表明，其需求量在3.20–6.87 mg / kg的范围内。