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Metabolic fate is defined by amino acid nature in gilthead seabream fed different diet formulations

dc.contributor.authorTeodósio, Rita
dc.contributor.authorAragão, Cláudia
dc.contributor.authorConceição, Luís E. C.
dc.contributor.authorDias, Jorge
dc.contributor.authorEngrola, Sofia
dc.date.accessioned2022-07-14T10:22:47Z
dc.date.available2022-07-14T10:22:47Z
dc.date.issued2022-07-02
dc.date.updated2022-07-13T14:24:53Z
dc.description.abstractThe sustainability of the Aquaculture industry relies on optimising diets to promote nitrogen retention and maximise fish growth. The aim of this study was to assess how different dietary formulations influence the bioavailability and metabolic fate of distinct amino acids in gilthead seabream juveniles. Amino acids (lysine, tryptophan, and methionine) were selected based on their ketogenic and/or glucogenic nature. Seabream were fed practical diets with different protein (44 and 40%) and lipid contents (21 and 18%): 44P21L, 44P18L, 40P21L, and 40P18L. After three weeks of feeding, the fish were tube-fed the correspondent diet labelled with 14C-lysine, 14C-tryptophan, or 14C-methionine. The amino acid utilisation was determined based on the evacuation, retention in gut, liver, and muscle, and the catabolism of the tracer. The metabolic fate of amino acids was mainly determined by their nature. Tryptophan was significantly more evacuated than lysine or methionine, indicating a lower availability for metabolic purposes. Methionine was more retained in muscle, indicating its higher availability. Lysine was mainly catabolised, suggesting that catabolism is preferentially ketogenic, even when this amino acid is deficient in diets. This study underpins the importance of optimising diets considering the amino acids’ bioavailability and metabolic fate to maximise protein retention in fish.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/ani12131713pt_PT
dc.identifier.issn2076-2615
dc.identifier.slugcv-prod-3020202
dc.identifier.urihttp://hdl.handle.net/10400.1/17991
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectKetogenicpt_PT
dc.subjectGlucogenicpt_PT
dc.subjectCatabolismpt_PT
dc.subjectAmino acid bioavailabilitypt_PT
dc.subjectNutrient fluxpt_PT
dc.titleMetabolic fate is defined by amino acid nature in gilthead seabream fed different diet formulationspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue13pt_PT
oaire.citation.startPage1713pt_PT
oaire.citation.titleAnimalspt_PT
oaire.citation.volume12pt_PT
person.familyNameTeodósio
person.familyNameAragão
person.familyNameEngrola
person.givenNameRita
person.givenNameCláudia
person.givenNameSofia
person.identifier174173
person.identifier237846
person.identifier.ciencia-id1913-A912-4673
person.identifier.ciencia-idD01E-0726-9F3E
person.identifier.ciencia-idA610-29E7-9B83
person.identifier.orcid0000-0002-8648-1241
person.identifier.orcid0000-0002-9217-0183
person.identifier.orcid0000-0002-5244-5541
person.identifier.ridK-2310-2012
person.identifier.ridA-2485-2012
person.identifier.scopus-author-id35867417300
person.identifier.scopus-author-id55903315700
person.identifier.scopus-author-id8669620600
rcaap.cv.cienciaidD01E-0726-9F3E | Cláudia Raquel Cêa de Aragão Teixeira
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication4200b284-f483-4fef-b51d-fcfdecc5b60d
relation.isAuthorOfPublicationbc649967-3b39-41dc-8fab-b60c24e65286
relation.isAuthorOfPublication51be5a20-df9c-4a90-85eb-51d779642caa
relation.isAuthorOfPublication.latestForDiscoverybc649967-3b39-41dc-8fab-b60c24e65286

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