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Functional algal feeds for aquaculture: micro- and macroalgae promote gut recovery in gilthead seabream

2025-11-15Journal article Open access
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dc.contributor.authorGarcía-Gallego, Ibon
dc.contributor.authorAragão, Cláudia
dc.contributor.authorTeodósio, Rita
dc.contributor.authorFachadas Gato Coelho Gonçalves, Ana Teresa
dc.contributor.authorEngrola, Sofia
dc.date.accessioned2025-12-19T10:52:38Z
dc.date.available2025-12-19T10:52:38Z
dc.date.issued2025-11-15
dc.description.abstractGut health is essential for optimal growth, immune function, and robustness in aquaculture. This study evaluated the potential of dietary supplementation with micro- and macroalgae to promote intestinal recovery following an insult. Four experimental diets were formulated for gilthead seabream (Sparus aurata) juveniles (176 } 0.32 g): a control commercial-like diet (CTRL), and the same diet supplemented with either microalgae (Phaeodactylum tricornutum; PHA) or macroalgae (Gracilaria gracilis; GRA) at 2.5%, or a 5% blend of both (50:50; BLEND). To induce an intestinal insult, fish from each dietary group were assisted-fed with gelatine capsules containing soy saponins (CTRL + S, PHA, GRA, BLEND), while control fish received empty capsules (CTRL). After 72 h, CTRL and CTRL + S groups were fed the control diet, while PHA, GRA, and BLEND received their respective algaesupplemented diets. After 20 days, CTRL + S fish had significantly increased mucus cell numbers and submucosal cellular infiltration compared to CTRL fish, indicating intestinal disruption. PHA diet significantly upregulated igm, il10, and gpx. Fish fed GRA displayed a significant increase in mucosal vacuolation. BLEND diet showed synergistic effects, significantly upregulating il1b and pcna and reducing ALP activity. These results highlight the potential of combining micro- and macroalgae compounds to enhance gut recovery and immune activation.eng
dc.description.sponsorshipUID/PRR/04326/2025; ALG-01-0247-FEDER-04717
dc.identifier.doi10.3390/fishes10110588
dc.identifier.issn2410-3888
dc.identifier.urihttp://hdl.handle.net/10400.1/27989
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationCentre of Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofFishes
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAntioxidant response
dc.subjectGilthead seabream
dc.subjectGut health
dc.subjectImmune response
dc.subjectSparus aurata
dc.titleFunctional algal feeds for aquaculture: micro- and macroalgae promote gut recovery in gilthead seabreameng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre of Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMulti%2F04326%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.issue11
oaire.citation.titleFishes
oaire.citation.volume10
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameGarcía-Gallego
person.familyNameAragão
person.familyNameTeodósio
person.familyNameFachadas Gato Coelho Gonçalves
person.familyNameEngrola
person.givenNameIbon
person.givenNameCláudia
person.givenNameRita
person.givenNameAna Teresa
person.givenNameSofia
person.identifier174173
person.identifier237846
person.identifier.ciencia-idD01E-0726-9F3E
person.identifier.ciencia-id1913-A912-4673
person.identifier.ciencia-id9F1F-939B-B01A
person.identifier.ciencia-idA610-29E7-9B83
person.identifier.orcid0000-0003-3370-9916
person.identifier.orcid0000-0002-9217-0183
person.identifier.orcid0000-0002-8648-1241
person.identifier.orcid0000-0002-5443-7182
person.identifier.orcid0000-0002-5244-5541
person.identifier.ridK-2310-2012
person.identifier.ridA-2485-2012
person.identifier.scopus-author-id55903315700
person.identifier.scopus-author-id35867417300
person.identifier.scopus-author-id56308820700
person.identifier.scopus-author-id8669620600
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
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