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Can lysine and branched-chain amino acids improve lumpfish health and stress resilience?

2025-12Journal article Open access
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dc.contributor.authorLopes, Tiago da Santa
dc.contributor.authorCostas, Benjamin
dc.contributor.authorRamos-Pinto, Lourenço
dc.contributor.authorPimentel, Christopher
dc.contributor.authorPinto-Cunha, Francisco
dc.contributor.authorReynolds, Patrick
dc.contributor.authorImsland, Albert K. D.
dc.contributor.authorAragão, Cláudia
dc.contributor.authorFernandes, Jorge M. O.
dc.date.accessioned2026-01-07T10:09:08Z
dc.date.available2026-01-07T10:09:08Z
dc.date.issued2025-12
dc.description.abstractThe expansion of lumpfish use as a cleaner fish has recently come to a halt, in part due to the concerns around their welfare. While refining handling procedures and operational standards is necessary, improving aquafeeds has the potential to alleviate the burden caused by chronic stress. This study examined the influence of different inclusions of dietary branched-chain amino acids (BCAAs) and lysine (Lys) on lumpfish health, immunity, stress response, growth and plasma amino acid profiles for 10 weeks. Stress and metabolic biomarkers (cortisol, lactate, glucose, triglycerides) showed modest but measurable alterations, such as lower triglycerides and higher glucose in fish fed the diet with limiting Lys and BCAAs. Metabolic differences were also visible from plasma amino acid profiles. Limiting Lys and BCAAs in diets seems to increase the glucogenic activity in stressed fish, increasing glucogenic amino acid levels in plasma. Diets with increased Lys and BCAAs levels increased antiprotease activity and lowered GABA plasma concentrations. These findings suggest that Lys- and BCAAs-enriched diets might provide relevant nutritional support, which allows the organism to adapt to a mild chronic stress. Immunonutrition can prove to be an effective strategy to ameliorate welfare in the face of chronic stress.eng
dc.description.sponsorshipDL57/2016/CP1361/CT0033
dc.identifier.doi10.1016/j.aqrep.2025.103235
dc.identifier.issn2352-5134
dc.identifier.urihttp://hdl.handle.net/10400.1/28059
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofAquaculture Reports
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectLumpfish
dc.subjectStress
dc.subjectAmino acids
dc.subjectWelfare
dc.subjectImmunity
dc.subjectBCAA
dc.subjectLysine
dc.titleCan lysine and branched-chain amino acids improve lumpfish health and stress resilience?eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04423%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.startPage103235
oaire.citation.titleAquaculture Reports
oaire.citation.volume45
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameAragão
person.givenNameCláudia
person.identifier174173
person.identifier.ciencia-idD01E-0726-9F3E
person.identifier.orcid0000-0002-9217-0183
person.identifier.ridK-2310-2012
person.identifier.scopus-author-id55903315700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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relation.isAuthorOfPublication.latestForDiscoverybc649967-3b39-41dc-8fab-b60c24e65286
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