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The use of egg quality parameters to evaluate the effect of a diet supplemented with algae and antioxidants in turbot (Scophthalmus maximus)

2025-05Journal article Open access
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dc.contributor.authorRamos Júdez, Sandra
dc.contributor.authorFatsini Fernández, Elvira
dc.contributor.authorMarrero Alemán, Carlos
dc.contributor.authorGarcía-Pichel, Candela
dc.contributor.authorParente, Pedro
dc.contributor.authorMedina, D.
dc.contributor.authorCastro, C.
dc.contributor.authorCabrita, Elsa
dc.contributor.authorOliveira, Catarina
dc.date.accessioned2025-03-17T13:21:40Z
dc.date.available2025-03-17T13:21:40Z
dc.date.issued2025-05
dc.description.abstractEnhancing egg quality can be achieved by improving breeders’ diet through the antioxidant content, as oxidative stress could adversely affect egg quality. Micro- and macroalgae species are natural sources of antioxidants and other essential nutrients that can be incorporated in fish feeds. In this study the quality of Scophthalmus maximus eggs were compared between breeders fed a commercial (non-supplemented) diet and those fed a diet enriched with 5 % Arthrospira platensis and 1 % of the iodine-rich Laminaria digitata, further fortified with antioxidants (astaxanthin, vit. C and E) (supplemented diet). Several egg parameters were evaluated. Hierarchical clustering of all the egg batches grouped them into two main categories: higher (≥ 50 % buoyancy) and lower-quality eggs (≤ 30 % buoyancy). The expression of transcripts related to egg quality (ctsz, ccna2), oxidative response (nrf2, cat), and apoptosis (bax, casp3a) was also measured in batches categorized by quality, as well as in higher-quality batches from females fed the commercial versus supplemented diet. Eggs of higher quality (greater buoyancy), regardless of females’ diet, had significantly higher total antioxidant status (TAS) levels (P < 0.05), suggesting TAS as an egg quality marker. The expression of ccna2 was upregulated, while ctsz showed almost no expression in higher-quality eggs but was down-regulated in lower-quality eggs, highlighting their potential as markers of egg quality in turbot. Higher-quality eggs from females fed the supplemented diet exhibited higher TAS, lower superoxide dismutase activity, and an upregulation of nrf2 compared to higher-quality eggs from non supplemented females. This suggests a more efficient cellular mechanism to restore oxidative homeostasis. Supplementing the diet increased the likelihood of achieving ≥80 % buoyant eggs and overall cumulative egg production, contributing to more effective and sustainable turbot farming.eng
dc.description.sponsorship57/2016/CP1361/CT0007; 01/C05-i02/2022.P148; ALG-05-3559-FSE-000021
dc.identifier.doi10.1016/j.aquaculture.2025.742306
dc.identifier.issn0044-8486
dc.identifier.urihttp://hdl.handle.net/10400.1/26916
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationMitigation solutions for the reproductive disorder of Senegalese sole cultivation – MITIGASOLE
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofAquaculture
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMicroalgae
dc.subjectMacroalgae
dc.subjectAntioxidants
dc.subjectEgg quality parameters
dc.subjectFeed supplementation
dc.titleThe use of egg quality parameters to evaluate the effect of a diet supplemented with algae and antioxidants in turbot (Scophthalmus maximus)eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMitigation solutions for the reproductive disorder of Senegalese sole cultivation – MITIGASOLE
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/CEEC IND 3ed/2020.04181.CEECIND%2FCP1597%2FCT0002/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.startPage742306
oaire.citation.titleAquaculture
oaire.citation.volume601
oaire.fundingStreamCEEC IND 3ed
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameRamos Júdez
person.familyNameFatsini Fernández
person.familyNameMarrero Alemán
person.familyNameParente
person.familyNameCabrita
person.familyNameOliveira
person.givenNameSandra
person.givenNameElvira
person.givenNameCarlos
person.givenNamePedro
person.givenNameElsa
person.givenNameCatarina
person.identifierhttps://scholar.google.es/citations?hl=en&pli=1&user=55mbsZIAAAAJ
person.identifier.ciencia-idEA1D-0571-7A6D
person.identifier.ciencia-id0816-30C5-51AC
person.identifier.orcid0000-0003-4242-5894
person.identifier.orcid0000-0003-0371-5290
person.identifier.orcid0000-0002-5726-6710
person.identifier.orcid0009-0007-3997-7985
person.identifier.orcid0000-0003-3864-8841
person.identifier.orcid0000-0002-6679-761X
person.identifier.ridE-8523-2012
person.identifier.scopus-author-id26645697000
person.identifier.scopus-author-id35433190500
project.funder.identifierhttp://doi.org/10.13039/501100001871
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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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