The aquaculture industry is diminishing the amount of fishmeal needed to maintain its protein demand. Alternatives are tested in this way, being insects one of the most promising. In this study, two different insectmeals were tested at different fishmeal replacement proportions (150 and 300 g·kg^‐1) in diets for Oncorhynchus mykiss. This study covers diverse aspects related to growth, protein utilization, physiological status of the fish, and quality of the final product. The inclusion of insectmeals had no negative effects on growth, protein utilization and on the physiological status of the fish. At the highest fishmeal replacement level with Tenebrio molitor, fish showed a higher digestibility of the protein, a reduction in viscerosomatic index and a higher aerobic catabolism, generating a pro‐oxidative environment that was compensated by an increase in antioxidant enzymes, revealing the importance of choosing the appropriate insectmeal. A significant reduction in omega‐3 fatty acids in the fillet was observed with an increasing insectmeal inclusion. The study proves that insectmeal can be a viable alternative for the partial replacement of fishmeal in rainbow trout, but further studies are needed to determine the most appropriate insectmeal, and to deal with the reduction of omega‐3 fatty acids.

中文翻译：

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在黑鳟（Oncorhynchus mykiss）的饮食中可能会使用黑士兵蝇（Hermetia illucens）和粉虫（Tenebrio molitor）昆虫粉

水产养殖业正在减少维持其蛋白质需求所需的鱼粉数量。替代品以这种方式进行了测试，是最有前途的昆虫之一。在这项研究中，在Oncorhynchus mykiss的日粮中以两种不同的鱼粉替代比例（150和300 g·kg ^-1）测试了两种不同的昆虫粉。这项研究涵盖了与生长，蛋白质利用，鱼的生理状况以及最终产品质量有关的各个方面。包含昆虫粉对鱼类的生长，蛋白质利用和生理状况没有负面影响。黄粉虫的最高鱼粉替代水平鱼类显示出较高的蛋白质消化率，内脏指数降低和有氧分解代谢增加，从而产生了一种前氧化环境，并被抗氧化酶的增加所补偿，这表明选择适当的昆虫粉的重要性。观察到鱼粉中夹杂物的增加，鱼片中的ω-3脂肪酸显着减少。研究证明，昆虫粉可以替代部分虹鳟鱼粉，但仍需进一步研究以确定最合适的昆虫粉，并减少omega-3脂肪酸的含量。