Influence of Substrates on the Quality of Hermetia Meal for Fish Meal Substitution in Nile Tilapia Oreochromis niloticus

Commercially produced black soldier flies (Hermetia illucens) represent a promising fish meal substitute, particularly in the context of using agricultural by-products and waste. Here, culture Hermetia maggots on five selected substrates (potato protein (P) as by-product starch production, rapeseed oil cake (R) from rape maize silage (M), soybean (S) and, control, concentrated chicken feed (C)) were evaluated, assessing growth performance related to overall production nutritional composition respective meal. Subsequently, their use ingredients aquafeed formulations was evaluated feeding trial with juvenile Nile tilapia Oreochromis niloticus, fish. Substrates used for significantly affected development maggots, revealing substantial differences quality. Still, if incorporated isonitrogenous isocaloric diets (33% crude protein, 21–22 MJ/kg) replacing 75% fishmeal formulated diets, no significant observed compared control. As conclusion, clearly affect yield maggots. Nevertheless, this can be compensated by formulation demonstrated trial.