Article (Scientific journals)
Production of rainbow trout (Oncorhynchus mykiss) using black soldier fly (Hermetia illucens) prepupae-based formulations with differentiated fatty acid profiles
Hoc, Bertrand; Tomson, Thomas; Malumba Kamba, Paul et al.
2021In Science of the Total Environment, 794
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Keywords :
Aquafeed; Fatty acids; Fish meal substitution; Insect production; Recirculating aquaculture system; Sustainable model; Fisheries; Nutrition; Fatty acids profiles; Feed ingredients; Fish nutritions; Fishery product; Rainbow trouts (Oncorhynchus mykiss); Fish; Hermetia illucens; Hexapoda; Oncorhynchus mykiss; Diptera; Animal Feed; Animals; Diet; Larva
Abstract :
[en] The aquaculture sector is expanding rapidly and needs an increasing supply of fishery products. To ensure an ecological transition of this sector, alternative feed ingredients are required for fish nutrition. Potential alternatives include insects, particularly the black soldier fly (BSF, Hermetia illucens L. 1758), which is being increasingly targeted for their nutritional qualities and their sustainable production practices. BSF have a well-balanced amino acid profile; however, their fatty acid profile is not sufficiently balanced for most aquafeed formulations but can be modulated through their feed. In this study, two different batches of BSF prepupae (BSFP) were firstly produced: BSFP with a standard ω3 content (C18:3n-3 ≈ 1.36%) and ω3-enriched BSFP (C18:3n-3 ≈ 9.67%). Then, three isoproteic, -lipidic and -energetic trout feeds were formulated and produced: one control and two feeds containing 75% BSF meal as a substitute for fish meal (standard vs ω3-enriched-BSF). Finally, a trout feeding trial (n = 3 for each feed batch) in a recirculating aquaculture system was carried out for 75 days. BSFP meal inclusion in trout diets did not impact most nutritional and growth parameters of trout compared to the control; however, the coefficient of fatness increased, weight gain decreased and fatty acid profiles of fillets were altered. In conclusion, this study presents a more sustainable model of trout production by including insects from bioconversion of local byproducts in aquafeed. © 2021 Elsevier B.V.
Disciplines :
Entomology & pest control
Author, co-author :
Hoc, Bertrand ;  Université de Liège - ULiège > Département GxABT > Gestion durable des bio-agresseurs
Tomson, Thomas ;  Integrated and Urban Plant Pathology, Gembloux Agro-Bio Tech (University of Liège), Passage des Déportés 2, Gembloux, 5030, Belgium
Malumba Kamba, Paul  ;  Food Science and Formulation, Gembloux Agro-Bio Tech (University of Liège), Passage des Déportés 2, Gembloux, 5030, Belgium
Blecker, Christophe ;  Université de Liège - ULiège > Département GxABT > SMARTECH
Jijakli, Haissam  ;  Université de Liège - ULiège > Département GxABT > Gestion durable des bio-agresseurs
Purcaro, Giorgia  ;  Université de Liège - ULiège > Département GxABT > Chimie des agro-biosystèmes
Francis, Frédéric  ;  Université de Liège - ULiège > Département GxABT > Gestion durable des bio-agresseurs
Caparros Megido, Rudy  ;  Université de Liège - ULiège > Département GxABT > Gestion durable des bio-agresseurs
Language :
English
Title :
Production of rainbow trout (Oncorhynchus mykiss) using black soldier fly (Hermetia illucens) prepupae-based formulations with differentiated fatty acid profiles
Publication date :
2021
Journal title :
Science of the Total Environment
ISSN :
0048-9697
eISSN :
1879-1026
Publisher :
Elsevier B.V.
Volume :
794
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 November 2021

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