This study was conducted to determine the optimal level of defatted black soldier fly pre-pupae (BSFP), Hermetia illucens as a fishmeal replacement in lemon fin barb hybrid diet. Triplicate groups of fish (1.52 ± 0.01 g) were fed twice a day until apparent satiation with five iso-nitrogenous (30 %) and isocaloric (17 kJ g⁻¹) diets containing varying BSFP levels ranging from 0 to 100 % for 8 weeks. No mortality was found during this study. BSFP level used in the diets were significantly affected the growth response of the barb hybrid. The growth performance of fish such as body weight gain and specific growth rate improved up to 75 % BSFP and decreased above this level, while feed conversion ratio and daily feed intake were not affected by BSFP levels. Body protein and lipid contents of the barb hybrid were significantly affected by dietary replacement levels. The protein retention decreased and lipid retention increased when the BSFP level increased, while the carbohydrate retention was extremely low. The most abundant of essential amino acids in the whole body of lemon fin barb hybrid was valine while glutamic acid was the abundant non-essential amino acids. No pathological changes were observed among all dietary fed groups. The present study suggested that fishmeal could be replaced up to 75 % or 2.5 % fishmeal was still required in the lemon fin barb hybrid diet.

本研究旨在确定脱脂黑水虻蛹前 (BSFP) Hermetia illucens 作为柠檬鳍倒钩杂交饮食中鱼粉替代品的最佳水平。三组鱼 (1.52 ± 0.01 g) 每天喂食两次，直到用五种异氮 (30 %) 和等热量 (17 kJ g ^-1) 含有不同 BSFP 水平的饮食，范围从 0 到 100%，持续 8 周。在这项研究中没有发现死亡。日粮中使用的 BSFP 水平显着影响了倒钩杂种的生长反应。鱼类的生长性能如体重增加和比生长率提高到 75% BSFP 并在此水平以上下降，而饲料转化率和日采食量不受 BSFP 水平的影响。倒钩杂种的身体蛋白质和脂质含量受饮食替代水平的显着影响。当BSFP水平增加时，蛋白质保留减少，脂质保留增加，而碳水化合物保留极低。柠檬鳍倒钩杂种全身必需氨基酸含量最多的是缬氨酸，谷氨酸是含量最多的非必需氨基酸。在所有饮食喂养组中均未观察到病理变化。目前的研究表明，在柠檬鳍倒钩杂交日粮中，鱼粉可以替代高达 75% 或 2.5% 的鱼粉。