A 60-day feeding trial was performed to test the nutritional value and utilization possibility of palm kernel meal (PKM) as a feed ingredient for juvenile Labeo rohita. Five iso-nitrogenous diets were prepared with various inclusions of PKM which replaced sunflower oil cake and de-oiled rice bran namely, control (without PKM), T1 (50 g/kg PKM), T2 (100 g/kg PKM), T3 (150 g/kg PKM) and T4 (200 g/kg PKM). The experiment was conducted in 350 L fibre reinforced plastic tanks in triplicate and each tank stocked with twenty-five juvenile rohu (7.2 ± 0.01 g) were fed twice daily at 5% of body weight with the experimental diet. The growth performance values showed a higher overall linear trend in T2 and it is significantly different from control as well as T1 groups. Final results showed highest average body weight, specific growth rate, protein efficiency ratio, and apparent net protein utilization in a dose-dependent manner (p < 0.05). Significantly higher amylase, protease, and lipase activities were recorded in T2 treatment (p = 0.003, p = 0.001 and p = 0.002, respectively). Additionally, dietary PKM significantly lowered the aspartate amino transferase, alkaline amino transferase and alkaline phosphatase enzyme activities in a dose-dependent manner (p < 0.05). Significantly higher lactate dehydrogenase, malate dehydrogenase, superoxide dismutase and catalase activities in the liver tissues were recorded in T4 (p = 0.004, p = 0.01 and p = 0.02 and p = 0.001, respectively). Based on the polynomial regression analysis, the PKM inclusion at 26.17–100.11 g/kg can be effectively used in the diet of juvenile L. rohita as a non-conventional growth-promoting feed ingredient without any harmful effects on its growth performance and physiological activities.

进行了为期60天的喂养试验，以测试棕榈仁粕（PKM）作为幼年Labeo rohita饲料成分的营养价值和利用可能性。用五种不同的PKM包合物替代了葵花籽饼和去油的米糠，准备了五种等氮饮食，即对照（无PKM），T1（50 g / kg PKM），T2（100 g / kg PKM），T3 （150 g / kg PKM）和T4（200 g / kg PKM）。该实验在350 L纤维增强塑料罐中一式三份进行，每个罐中放有25只少年肉ro（7.2±0.01 g），每天两次，以体重的5％饲喂实验饮食。生长性能值在T2中显示出较高的总体线性趋势，与对照组和T1组明显不同。最终结果显示出最高的平均体重，比生长速率，蛋白质效率比和表观的净蛋白质利用率呈剂量依赖性（p <0.05）。淀粉酶，蛋白酶，在T2处理中记录了脂肪酶和脂肪酶的活性（分别为p = 0.003，p = 0.001和p = 0.002）。此外，饮食中的PKM以剂量依赖性方式显着降低了天冬氨酸氨基转移酶，碱性氨基转移酶和碱性磷酸酶的活性（p <0.05）。在T4中记录到肝组织中乳酸脱氢酶，苹果酸脱氢酶，超氧化物歧化酶和过氧化氢酶活性明显较高（分别为p = 0.004，p = 0.01和p = 0.02和p = 0.001）。根据多项式回归分析，可以将26.17–100.11 g / kg的PKM含量有效地用于青少年饮食中 碱性氨基转移酶和碱性磷酸酶的活性呈剂量依赖性（p <0.05）。在T4中记录到肝组织中乳酸脱氢酶，苹果酸脱氢酶，超氧化物歧化酶和过氧化氢酶活性明显较高（分别为p = 0.004，p = 0.01和p = 0.02和p = 0.001）。根据多项式回归分析，可以将26.17–100.11 g / kg的PKM含量有效地用于青少年饮食中 碱性氨基转移酶和碱性磷酸酶的活性呈剂量依赖性（p <0.05）。在T4中记录到肝组织中乳酸脱氢酶，苹果酸脱氢酶，超氧化物歧化酶和过氧化氢酶活性明显较高（分别为p = 0.004，p = 0.01和p = 0.02和p = 0.001）。根据多项式回归分析，可以将26.17–100.11 g / kg的PKM含量有效地用于青少年饮食中罗氏乳杆菌（L. rohita）是一种非常规的促生长饲料成分，对其生长性能和生理活性没有任何有害影响。