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The use of defatted Tenebrio molitor larvae meal as a main protein source is supported in European sea bass (Dicentrarchus labrax) by data on growth performance, lipid metabolism, and flesh quality

2021-04Contribution to journal Open access
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datacite.subject.fosCiências Médicas
datacite.subject.sdg03:Saúde de Qualidade
dc.contributor.authorBasto, Ana
dc.contributor.authorCalduch-Giner, Josep
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorPetit, Lisa
dc.contributor.authorSá, Tiago
dc.contributor.authorMaia, Margarida R. G.
dc.contributor.authorFonseca, Susana C.
dc.contributor.authorMatos, Elisabete
dc.contributor.authorPérez-Sánchez, Jaume
dc.contributor.authorValente, Luisa M. P.
dc.date.accessioned2025-10-16T10:18:57Z
dc.date.available2025-10-16T10:18:57Z
dc.date.issued2021-04
dc.description.abstractObjective: This study aims to determine the maximal inclusion level of defatted (d-) Tenebrio molitor larvae meal (TM) able to replace dietary fishmeal (FM) without compromising growth performance, general metabolism, and flesh quality traits in European sea bass, and to evaluate the major underlying physiological mechanisms. Materials and Methods: Fish (55 ± 2 g) were fed with diets containing increasing levels of dTM: 0, 40, 80 and 100% (CTRL, TM40, TM80, and TM100, respectively) to replace FM. After 10 weeks of feeding, the growth performance, nutrient and energy balance, intestinal integrity, plasma metabolites and the expression of genes related to growth and nutrient metabolism, in liver and muscle were determined. The fatty acids (FA) profile, textural properties and color were also evaluated in muscle. Results: Protein and lipids digestibility remained unaltered up to 80% dTM inclusion. Growth performance parameters were similar among dietary treatments. The dTM inclusion increased the hepatosomatic index in fish fed TM100. Muscle eicosapentaenoic acid, docosahexaenoic acid and n-3 long-chain polyunsaturated FA levels were maintained up to 80% dTM inclusion, but total cholesterol and non-esterified FA increased with dietary dTM inclusion. In liver, the expression of elongation of very long-chain FA protein 6 (elovl6) and FA desaturase 2 (fads2) did not change in fish fed TM40 and TM80, but elovl6 decreased whilst fads2 increased in fish fed TM100 when compared to those fed CTRL. The expression of cholesterol 7 alpha-monooxygenase (cyp7a1) decreased with dietary dTM inclusion. In muscle, the expression of myoblast determination protein-2 (myod2) decreased in fish fed TM80 and TM100. Conclusion: It is feasible to substitute dietary FM by dTM up to 80% in European sea bass without detrimental effects on nutrient digestibility, growth performance and associated genetic pathways, whilst assuring fillet nutritional value for human consumption.eng
dc.identifier.citationBasto A, Calduch-Giner J, Oliveira B, Petit L, Sá T, Maia MRG, Fonseca SC, Matos E, Pérez-Sánchez J and Valente LMP (2021) The Use of Defatted Tenebrio molitor Larvae Meal as a Main Protein Source Is Supported in European Sea Bass (Dicentrarchus labrax) by Data on Growth Performance, Lipid Metabolism, and Flesh Quality. Front. Physiol. 12:659567. doi: 10.3389/fphys.2021.659567
dc.identifier.doi10.3389/fphys.2021.659567
dc.identifier.issn1664-042X
dc.identifier.urihttp://hdl.handle.net/10400.26/59224
dc.language.isoeng
dc.peerreviewedyes
dc.publisherFrontiers Media
dc.relation.hasversionhttps://doi.org/10.3389/fphys.2021.659567
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectalternative protein sources
dc.subjectfatty acids profile
dc.subjectfeedstuffs
dc.subjectinsect meal
dc.subjectmuscle cell proliferation and differentiation
dc.subjectnutrient utilization
dc.titleThe use of defatted Tenebrio molitor larvae meal as a main protein source is supported in European sea bass (Dicentrarchus labrax) by data on growth performance, lipid metabolism, and flesh qualityeng
dc.typecontribution to journal
dspace.entity.typePublication
oaire.citation.startPage659567
oaire.citation.titleFrontiers in Physiology
oaire.citation.volume12
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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