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Dietary lipid level affects growth performance and nutrient utilisation of Senegalese sole (Solea senegalensis) juveniles

2009-10Journal article Open access
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dc.contributor.authorBorges, Pedro
dc.contributor.authorOliveira, Beatriz
dc.contributor.authorCasal, Susana
dc.contributor.authorDias, Jorge
dc.contributor.authorConceicao, Luis
dc.contributor.authorValente, Luisa M. P.
dc.date.accessioned2018-12-07T14:58:07Z
dc.date.available2018-12-07T14:58:07Z
dc.date.issued2009-10
dc.description.abstractOver the last few years, several aspects of Senegalese sole (Solea senegalensis) culture have been developed and optimised but the dietary lipid level for optimal growth has never been determined. Hence, five isonitrogenous diets (56 % dietary protein) with increasing dietary lipid levels (4, 8, 12, 16 and 20 % DM) were fed to satiation to triplicate groups of twenty fish (mean initial weight 10 g). Fifteen tanks were randomly assigned one of the five diets. Feed was distributed using automatic feeders, and fish were fed over a 16-week period. At the end of the experiment the fish fed on diets containing the two lowest dietary lipid levels (4 and 8 %) showed a 3-fold body-weight increase with a significantly higher daily growth index than fish fed higher lipid levels (1-2 v. 0-8). Moreover, these fish displayed a significantly lower dry feed intake (12g/kg per d) and feed conversion ratio (1-0) compared with fish fed higher lipids levels (16-19 g/kg per d; feed conversion ratio 2-0). Low dietary lipid levels (< 12 %) significantly improved nutrient retention and gain and hence growth, without major effects on whole-body composition. Despite the slight alteration in n-3 PUFA muscle content in the fish fed low-fat-diets, this fish fed low dietary lipid still remains a rich n-3 PUFA product and generally maintained its nutritional value. These results evidenced a low lipid tolerance of Senegalese sole juveniles and suggest a maximal dietary inclusion level of 8 % lipids for both optimal growth and nutrient utilisation without compromising flesh quality.
dc.description.sponsorshipIDEIA; European fund FEDER
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doihttps://doi.org/10.1017/S0007114509345262
dc.identifier.issn0007-1145
dc.identifier.urihttp://hdl.handle.net/10400.1/11868
dc.language.isoeng
dc.peerreviewedyes
dc.publisherCambridge University Press
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectHalibut hippoglossus hippoglossus
dc.subjectBass dicentrarchus labrax
dc.subjectAtlantic halibut
dc.subjectFeed utilization
dc.subjectSparus aurata
dc.subjectHepatic lipogenesis
dc.subjectRainbow trout
dc.subjectFatty acids
dc.subjectProtein
dc.subjectQuality
dc.subjectLipid nutrition
dc.subjectDietary lipid tolerance
dc.subjectProtein-sparing effect
dc.titleDietary lipid level affects growth performance and nutrient utilisation of Senegalese sole (Solea senegalensis) juveniles
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1014
oaire.citation.issue7
oaire.citation.startPage1007
oaire.citation.titleBritish Journal of Nutrition
oaire.citation.volume102
person.familyNameConceicao
person.givenNameLuis
person.identifier1577554
person.identifier.ciencia-id9219-5DB3-CD39
person.identifier.orcid0000-0001-6102-2068
person.identifier.ridH-6257-2011
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication7e7768bc-83a8-4d03-9f62-ff0fa8f4d0d4
relation.isAuthorOfPublication.latestForDiscovery7e7768bc-83a8-4d03-9f62-ff0fa8f4d0d4

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