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dc.contributor.authorKennedy, Sean Roberten_UK
dc.contributor.authorBickerdike, Ralphen_UK
dc.contributor.authorBerge, Rolf Ken_UK
dc.contributor.authorPorter, Allan Ren_UK
dc.contributor.authorTocher, Douglas Ren_UK
dc.description.abstractThe aim of the present study was to determine the effects of conjugated linoleic acid (CLA) and tetradecylthioacetic acid (TTA) on growth performance, and lipid and fatty acid metabolism in Atlantic cod. The overall objective being to test the hypotheses that CLA and TTA have beneficial effects in cod culture including decreased liver size and proportion through decreased lipid content, and increased nutritional quality through effects on fatty acid compositions including accumulation of bioactive fatty acids, CLA and TTA, in flesh. Juvenile cod were fed for three months on fish meal and fish oil diets of basically commercial formulation, but containing either 0.5% or 1% CLA, or 0.5% TTA. The effects of the functional fatty acids on growth, feed efficiency, body proximate composition, liver weight and lipid composition, fatty acid compositions of flesh and liver, and key enzymes of fatty acid oxidation were determined. Dietary CLA and TTA had no effect on growth parameters in cod juveniles, but viscero- and hepato-somatic indices were increased in fish fed 0.5% CLA and TTA, respectively. Proximate composition of whole fish was not affected by CLA or TTA, and there were no major effects of either functional fatty acid on lipid contents and compositions of liver and flesh. Dietary CLA and TTA were both incorporated into tissue lipids, with CLA deposited to a greater extent in liver, whereas TTA was deposited to a greater extent in flesh. In liver, acyl CoA oxidase (ACO) activity, but not carnitine palmitoyltransferase-I (CPT-I), was increased by CLA, whereas dietary TTA increased both ACO and CPT-I activities. In contrast, ACO activity was reduced by both CLA and TTA in red and white muscle, whereas CPT-I activity was generally not affected by CLA and TTA in either muscle tissue. Therefore, the results only partially supported the hypotheses tested, as CLA and TTA had few beneficial effects in Atlantic cod and did not enhance growth parameters, or improve feed conversion or potential yield through decreased adiposity or liver lipid deposition. However, nutritional quality could be enhanced, and cod fed CLA and/or TTA could be beneficial in the human diet, through provision of bioactive fatty acids with no detrimental effects on n-3 PUFA levels.en_UK
dc.relationKennedy SR, Bickerdike R, Berge RK, Porter AR & Tocher DR (2007) Influence of dietary conjugated linoleic acid (CLA) and tetradecylthioacetic acid (TTA) on growth, lipid composition and key enzymes of fatty acid oxidation in liver and muscle of Atlantic cod (Gadus morhua L.). Aquaculture, 264 (41000), pp. 372-382.
dc.rightsPublished in Aquaculture by Elsevieren_UK
dc.subjectGadus morhuaen_UK
dc.subjectAtlantic coden_UK
dc.subjectFatty aciden_UK
dc.subjectLinoleic acid Physiological effecten_UK
dc.subjectLipoproteins Fishen_UK
dc.subjectFishes Qualityen_UK
dc.subjectFishes Healthen_UK
dc.subjectAtlantic coden_UK
dc.titleInfluence of dietary conjugated linoleic acid (CLA) and tetradecylthioacetic acid (TTA) on growth, lipid composition and key enzymes of fatty acid oxidation in liver and muscle of Atlantic cod (Gadus morhua L.)en_UK
dc.typeJournal Articleen_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.contributor.affiliationUniversity of Stirlingen_UK
dc.contributor.affiliationBioMar Ltden_UK
dc.contributor.affiliationHaukeland University Hospitalen_UK
dc.contributor.affiliationUniversity of Stirlingen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorKennedy, Sean Robert|en_UK
local.rioxx.authorBickerdike, Ralph|en_UK
local.rioxx.authorBerge, Rolf K|en_UK
local.rioxx.authorPorter, Allan R|en_UK
local.rioxx.authorTocher, Douglas R|0000-0002-8603-9410en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameKennedy et al 2007.pdfen_UK
Appears in Collections:Aquaculture Journal Articles

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