Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/7562
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dc.contributor.authorCastell, John Den_UK
dc.contributor.authorBell, J Gordonen_UK
dc.contributor.authorTocher, Douglas Ren_UK
dc.contributor.authorSargent, John Ren_UK
dc.date.accessioned2015-06-08T23:11:04Z-
dc.date.available2015-06-08T23:11:04Zen_UK
dc.date.issued1994-12-15en_UK
dc.identifier.urihttp://hdl.handle.net/1893/7562-
dc.description.abstractThe objective of this study was to determine the relative essential fatty acid (EFA) growth-promoting activities of pure arachidonic (AA, 20:4n−6) and docosahexaenoic (DHA, 22:6n−3) acids and various concentrations of these two acids in the diet of juvenile turbot (Scophthalmus maximus). Casein-based, semi-purified diets containing 15% fish oil or 14% hydrogenated coconut oil/oleic acid (1:1) supplemented with 1% 20:4n−6, 1% 22:6n−3 or 1% of various combinations of these two acids were fed to duplicate groups of 26 juvenile turbot for 11 weeks. In this trial, feeding the diet containing 20:4n−6 as the only highly unsaturated fatty acid (HUFA) resulted in higher growth and survival than any of the mixtures of the two fatty acids or 22:6n−3 alone. The diet containing 22:6n−3 as the sole HUFA resulted in the lowest growth and survival of all dietary treatments. The control diet with 15% fish oil resulted in a greater growth rate than any of the pure HUFA-supplemented diets. There was a significant effect of dietary lipid on the somatic index of the brain but not heart, kidney or liver. The percentage of lipid in the liver, but not of heart, brain, eyes, gills or kidney, was influenced by dietary lipid, with the highest percentage in fish supplemented with DHA alone. After 11 weeks, the 20:4n−6 and 22:6n−3 levels in whole-body total lipids were strongly influenced by the content of these fatty acids in the diets. The relative effect of dietary levels of these two fatty acids on their content in fish lipids varied considerably among the various organs and tissues of the fish that were analyzed. Brain and eye lipids were generally highest in 22:6n−3 while gill and kidney lipids were consistently higher in 20:4n−6 than the other organs analyzed. The effect of dietary 20:4n−6 on the content of that HUFA in organ lipid was greatest in gill and liver. The greatest impact of dietary 22:6n−3 level on content of that acid in organ lipid was seen in gill and kidney. There were also significant effects of dietary HUFA content on organ lipid levels of saturated, mono-unsaturated fatty acids and other members of the n−3 and n−6 PUFA, and HUFA series. The present study suggests that the EFA growth-promoting activity of arachidonic acid provides strong support for the contention that dietary 20:4n−6 is essential for juvenile turbot.en_UK
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.relationCastell JD, Bell JG, Tocher DR & Sargent JR (1994) Effects of purified diets containing different combinations of arachidonic and docosahexaenoic acid on survival, growth and fatty acid composition of juvenile turbot (Scophthalmus maximus). Aquaculture, 128 (3-4), pp. 315-333. https://doi.org/10.1016/0044-8486%2894%2990320-4en_UK
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.rights.urihttp://www.rioxx.net/licenses/under-embargo-all-rights-reserveden_UK
dc.subjectSCOPHTHALMUS MAXIMUSen_UK
dc.subjectFEEDING AND NUTRITION, FISH, DIETARY REQUIREMENTSen_UK
dc.subjectFATS AND FATTY COMPOUNDSen_UK
dc.subjectARACHIDONIC ACIDen_UK
dc.subjectDOCOSAHEXAENOIC ACIDen_UK
dc.titleEffects of purified diets containing different combinations of arachidonic and docosahexaenoic acid on survival, growth and fatty acid composition of juvenile turbot (Scophthalmus maximus)en_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2999-12-16en_UK
dc.rights.embargoreason[tocher_aquaculture128_1994.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.identifier.doi10.1016/0044-8486(94)90320-4en_UK
dc.citation.jtitleAquacultureen_UK
dc.citation.issn0044-8486en_UK
dc.citation.volume128en_UK
dc.citation.issue3-4en_UK
dc.citation.spage315en_UK
dc.citation.epage333en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusVoR - Version of Recorden_UK
dc.author.emaild.r.tocher@stir.ac.uken_UK
dc.contributor.affiliationDepartment of Fisheries and Oceans, Canadaen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationUniversity of Stirlingen_UK
dc.identifier.isiWOS:A1994PW45200013en_UK
dc.identifier.scopusid2-s2.0-0001101052en_UK
dc.identifier.wtid783014en_UK
dc.contributor.orcid0000-0002-8603-9410en_UK
dcterms.dateAccepted1994-12-15en_UK
dc.date.filedepositdate2012-08-22en_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionVoRen_UK
local.rioxx.authorCastell, John D|en_UK
local.rioxx.authorBell, J Gordon|en_UK
local.rioxx.authorTocher, Douglas R|0000-0002-8603-9410en_UK
local.rioxx.authorSargent, John R|en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate2999-12-16en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved||en_UK
local.rioxx.filenametocher_aquaculture128_1994.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source0044-8486en_UK
Appears in Collections:Aquaculture Journal Articles

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