This study provides data on the environmental sustainability, economic profitability, and gastrointestinal tract development of Siberian sturgeon diets containing black soldier fly full-fat larvae meal (BSFL) for a fish meal (FM) and fish oil (FO) replacement. BSFL was used at 5%, 10%, 15%, 20%, 25%, and 30% of the diet, replacing by up to 61.3% of FM and 95.4% of FO. BSFL positively affected the feed efficiency ratio, and lowered FM and FO usage per kg of fish gain. All the BSFL diets showed a sustainable fish-in fish-out (FIFO) ratio, which was lowered by up to 75% in comparison to the control. Economic assessment per kg of fish gain showed that the most lucrative variants were variants with 10% and 15% BSFL, it finds a mode of action in improvements of the gastrointestinal tract development, including increased pyloric caeca and proximal intestine shares and enhanced villus height and area. Thus, in Siberian sturgeon, BSFL may be used not only as an FM and FO replacer but also as a functional material due to its feed utilization and beneficial health effects, which are reflected in its high sustainability and favourable economics.

中文翻译：

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在西伯利亚St鱼养殖中，黑士兵飞全脂幼虫餐比鱼粉和鱼油更有利可图：对水产养殖业可持续性，经济和鱼类GIT发展的影响

这项研究提供了关于西伯利亚st鱼饮食的环境可持续性，经济收益和胃肠道发育的数据，这些饮食包含黑士兵苍蝇全脂幼虫粕（BSFL）替代鱼粉（FM）和鱼油（FO）。BSFL的使用量为饮食的5％，10％，15％，20％，25％和30％，最多可替代FM的61.3％和FO的95.4％。BSFL对饲料效率比产生了积极影响，并降低了每公斤鱼获得的FM和FO用量。所有的BSFL饮食都显示出可持续的入鱼出鱼（FIFO）比率，与对照组相比降低了多达75％。每公斤鱼类增产的经济评估表明，最有利可图的变体是BSFL为10％和15％的变体，它发现了改善胃肠道发育的作用模式，包括幽门盲肠和近端肠道份额增加，绒毛高度和面积增加。因此，在西伯利亚st鱼中，BSFL不仅可以用作FM和FO的替代品，而且由于其饲料利用率高和有益于健康，还可以用作功能性材料，这体现在其高度的可持续性和良好的经济效益上。