Black Soldier Fly Full-Fat Meal in Atlantic Salmon Nutrition – Part A: Effects on Growth Performance, Feed Utilization, Selected Nutriphysiological Traits and Production Sustainability in Fries

Abstract Black soldier fly larva meal (BSFM) application as an innovative feed material has been developed in aquaculture nutrition. However, recent scientific literature is still lacking the case of insect effects on different stages salmonid fish, and vast majority research focused farmed Atlantic salmon. Therefore, holistic approach was undertaken cycle two studies carried out: fries pre-smolts. This study aimed to evaluate effect fish (FM) replacement by full-fat BSFM salmon fry diets growth performance, utilization, crude protein fat digestibility, somatic indices, histomorphology intestines, environmental sustainability. Additionally, pellet quality assessed. Two experiments were performed 360 – each which lasted 60 days. For first experiment, 240 individuals distributed four experimental groups: six replicates (tanks) per group 10 tank. second 120 three tank used. The following groups applied: CON without addition with 39% FM; BSFM5 5% 36.1% BSFM10 10% 33.3% BSFM15 15% 30.3% FM. present showed satisfactory results inclusion at levels a for feeds fries. No negative or intestinal structure recorded. Simultaneously, significantly improved sustainability feed. In BSFM15, decreases body weight gain, lipid efficiency ratio, well increases conversion observed. use shares higher than may not be recommended.