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Assimilation and catabolism of dispensable and indispensable free amino acids in post-larval Senegal sole (Solea senegalensis)

2001Journal article Restricted access
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dc.contributor.authorRønnestad, I.
dc.contributor.authorConceição, L. E. C.
dc.contributor.authorAragão, C.
dc.contributor.authorDinis, Maria Teresa
dc.date.accessioned2014-07-02T12:43:09Z
dc.date.available2014-07-02T12:43:09Z
dc.date.issued2001
dc.date.updated2014-06-27T16:14:15Z
dc.description.abstractThe postprandial metabolism of dietary free amino acids (AA) was studied in post-larval Senegal sole, Solea senegalensis, aged 32 days after hatching (DAH). The diet was administered as a single pulse (36 nl, 43.1 mmol/l) using a micro tube-feeding technique and a dissolved mixture of crystalline AA. In four separate treatments the diet contained L [U-14C] tracer for two indispensable AA (IAA), lysine and arginine or two dispensable amino acids (DAA), glutamate and alanine. The post-larva absorbed all tested AA from the diet with similar efficiency (97.5%). A small fraction of the IAA was catabolised (11.5±1.1 and 15.1±3.3%, for lysine and arginine, respectively) and a high proportion was retained in the body (86.7±1.3 and 81.6±4.1%). For the DAA more were catabolised (64.9±5.3% and 41.4±7.2% for glutamate and alanine, respectively) and less were retained (32.9±5.1% and 56.3±7.2%). On this basis, it appears that post-larval Senegal sole use DAA in preference to IAA as energy substrates while the retention (assimilation efficiency) is better for the IAA. These results support other recent studies that early stages of fish have a better capacity to regulate AA catabolism than previously believed and that indispensable AA are saved for body growth.por
dc.identifier.doihttp://dx.doi.org/ 10.1016/S1532-0456(01)00272-1
dc.identifier.issn1532-0456
dc.identifier.urihttp://hdl.handle.net/10400.1/4615
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S1532045601002721por
dc.subjectAlaninepor
dc.subjectArgininepor
dc.subjectAssimilationpor
dc.subjectFish larvaepor
dc.subjectFree amino acidspor
dc.subjectGlutamatepor
dc.subjectIndispensable amino acidspor
dc.subjectLysinepor
dc.subjectOxidationpor
dc.titleAssimilation and catabolism of dispensable and indispensable free amino acids in post-larval Senegal sole (Solea senegalensis)por
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage466por
oaire.citation.issue4por
oaire.citation.startPage461por
oaire.citation.titleComparative Biochemistry and Physiology - C Toxicology and Pharmacologypor
oaire.citation.volume130por
person.familyNameAragão
person.familyNameDinis
person.givenNameCláudia
person.givenNameMaria Teresa
person.identifier174173
person.identifier.ciencia-idD01E-0726-9F3E
person.identifier.ciencia-id5414-4ACF-BF90
person.identifier.orcid0000-0002-9217-0183
person.identifier.orcid0000-0001-7813-1324
person.identifier.ridK-2310-2012
person.identifier.scopus-author-id55903315700
person.identifier.scopus-author-id7004150905
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationbc649967-3b39-41dc-8fab-b60c24e65286
relation.isAuthorOfPublication309dec19-8aa9-4bea-8665-42dd4b3a9894
relation.isAuthorOfPublication.latestForDiscovery309dec19-8aa9-4bea-8665-42dd4b3a9894

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