Potential of insect-based diets for Atlantic salmon (Salmo salar)

By I. Belghit, N. Liland, R. Waagbø, I. Biancarosa, N. Pelusio, Yanxian Li, Å. Krogdahl, E. Lock. 2018

260 citations recorded by the source corpus.

Abstract In the present study, we aimed to assess the effect of dietary insect meal (IM) and insect oil (IO) on growth performance, body composition and nutrient digestibility of freshwater reared Atlantic salmon. The IM and IO were produced from black soldier fly larvae (Hermetia illucens, L.; BSF) that had been grown on (1) media containing organic waste streams, or on (2) media partially containing seaweed (Ascophyllum nodosum). The feeding trial of the current study followed a factorial 2 × 3 way-ANOVA experimental design with six dietary groups of Atlantic salmon fed diets with insect-derived ingredients for 8 weeks. A typical industrial diet, with protein from fish meal and soy protein concentrate (SPC) (50:50) and lipids from fish oil and vegetable oil (33:66), was fed to a positive control group. Five experimental diets were formulated, where 85% of the dietary protein was replaced by IM and/or all the vegetable oil was replaced by IO (IM from insects grown on media 1, IO from insects grown on either media 1 (IO1) or media 2 (IO2)). Replacing the dietary fish meal and SPC with insect protein significantly reduced the apparent digestibility coefficients (ADC) of protein, lipid and all amino acids investigated, though remained highly digestible. There were, however, only small differences due to protein or lipid source in growth performance, and no effects of insect ingredients on feed intake or feed conversion ratio. Inclusion of IM-based diets significantly increased both hepatosomatic index and visceral somatic index of Atlantic salmon. Proteinase activity in the intestine was not affected by dietary inclusion of BSF larvae meal, while leucine aminopeptidase activity was lower in fish fed with insect ingredients than the control group. Whole-body protein, lipid, amino acids and minerals contents were not affected by protein or lipid source. In general, this study showed that protein meal and oil from BSF larvae hold a great potential as a source of nutrients for Atlantic salmon.

Subfields: Aquatic Science, Insect Science, Social Psychology

View Paper: https://www.semanticscholar.org/paper/427555c08636d5082ed35e00c2689adf72981bcd

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Citations in the corpus

A comparative study on the effect of fish meal substitution with three different insect meals on growth, body composition and metabolism of European sea bass (Dicentrarchus labrax L.) (2020, unknown): “…(32.4%). r Moreover, it has also been found that HI diets performed as well as fish meal diets in Atlantic salmon ( Salmo salar ) at 60% inclusion (Belghit et al., 2018), in rainbow trout with up to 50% FM substitution (Mancini et al., 2017) and in Nile tilapia with up to 50% substitution (Rana…”
Insect meals in fish nutrition (2018, methodology): “In contrast, Belghit et al. (2018) tested replacement of up to 85% in Salmo salar without any significant differences among replacement levels. The variability in the results obtained by researchers using the same insect meal sources should be related to more than the amount of protein, which, accor”
The Utilization of Full-Fat Insect Meal in Rainbow Trout (Oncorhynchus mykiss) Nutrition: The Effects on Growth Performance, Intestinal Microbiota and Gastrointestinal Tract Histomorphology (2019, background): “…in interest using insects as feed components has been observed, including in the nutrition of farm animals, aquaculture and ornamental fish (Belghit et al., 2018; Bruni et al., 2018; Elia et al., 2018; Józefiak D. et al., 2016; Józefiak A. et al., 2018; Kierończyk et al., 2018 a, b; Vargas…”