Several anti-nutritional substances are found in plant derivatives for example phytate, that make the nutrients and minerals unavailable to fish, hence leading to poor growth performance. Presence of the anti-nutrient factor such as phytate is a chelated compound and need enzyme for its breakdown and availability of nutrients to improve fish growth. This research work was performed to check the improvement of overall performance of Cyprinus carpio fingerlings by the help of phytase addition in Moringa oleifera by- products based diet. Combination of Moringa seed meal and Moringa leaf meal was utilized as test ingredient to formulate seven test feeds, containing graded levels of phytase (0, 500, 650, 800, 950, 1100 and 1250 FTU kg⁻¹). In feeding trial of 70 days, fingerlings were given feed two times in a day at the rate of 4% of wet weight of their bodies and faeces were collected. According to current results, it was found that growth performance parameters i.e. weight gain; 25 g, specific growth rate; 1.67 and feed conversion ratio; 1.10 were improved to maximum at 950 FTU kg⁻¹. Digestibility of nutrients (crude protein; 73%, crude fat; 71% and gross energy; 67%) and minerals absorption was also maximum (Ca; 70%, Zn; 66%, K; 74%, Mn; 66% and P; 71%) at 950 FTU kg⁻¹. Lowest growth efficiency, nutrient digestibility and mineral absorption were observed in fingerlings fed at control diet (0 FTU kg⁻¹). Results of the current study, proved that 950 FTU kg⁻¹ is the most optimum level of phytase to formulate economical and ecofriendly feed for improved growth of C. carpio fingerlings as it decreases the discharge of minerals and nutrients in water bodies.

在植物衍生物中发现了几种抗营养物质，例如肌醇六磷酸，使养分和矿物质无法用于鱼类，因此导致生长性能差。抗营养因子（例如肌醇六磷酸）的存在是一种螯合化合物，需要酶才能使其分解和提供营养以改善鱼类的生长。进行这项研究工作是为了通过在辣木副产品饮食中添加肌醇六磷酸酶来检查鲤鱼鱼种的整体性能。将辣木籽粉和辣木叶粉的组合用作测试成分，以配制七种测试饲料，其中包含分级水平的植酸酶（0、500、650、800、950、1100和1250 FTU kg ^-1）。在为期70天的饲养试验中，给鱼种一天两次以其身体湿重的4％的速率进行喂养，并收集粪便。根据当前结果，发现生长性能参数，即体重增加；体重增加；体重增加。25 g，比增长率；1.67和饲料转化率；在950 FTU kg ^-1时，将1.10提高到最大值。营养物质（粗蛋白； 73％，粗脂肪； 71％和总能量； 67％）的消化率和矿物质吸收也最大（Ca； 70％，Zn； 66％，K； 74％，Mn； 66％和P ; 71％）在950 FTU kg ^-1下。在对照饮食（0 FTU kg ^-1）喂养的鱼种中观察到最低的生长效率，营养物质消化率和矿物质吸收。当前研究的结果证明了950 FTU kg ^-1是最经济的植酸酶水平，用于配制经济和环保的饲料，从而改善鲤鱼鱼种的生长，因为它减少了水体中矿物质和营养物质的排放。