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Pigmenting efficacy of astaxanthin fed to rainbow trout Oncorhynchus mykiss: Effect of dietary astaxanthin and lipid sources

2006Journal article Open access
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dc.contributor.authorChoubert, Georges
dc.contributor.authorMendes-Pinto, Maria Manuela
dc.contributor.authorMorais, Rui
dc.date.accessioned2010-11-09T12:55:07Z
dc.date.available2010-11-09T12:55:07Z
dc.date.issued2006
dc.description.abstractThe aim of the present experiment was to investigate the effect of two different dietary types of oil (fish oil (FI) and olive oil (OL)) on the pigmenting efficacy of astaxanthin from the green micro-algae Haematococcus pluvialis (ALG) (total amount of carotenoid pigments 32 mg kg− 1 on a dry weight basis of which astaxanthin accounted for 98.6%) and from the synthetic astaxanthin (AST) in terms of astaxanthin serum concentration, induced muscle colour, and astaxanthin muscle retention in rainbow trout for 6 weeks. Diets with different oil sources were well accepted by fish. At the end of the experiment there were no significant differences between fish fed different diets in final mean weight, specific growth rate, or feed conversion ratio. Fish fed AST showed higher (P < 0.05) serum concentrations than those fed ALG. Moreover fish fed diets OL displayed higher (P < 0.05) serum astaxanthin levels than those fed diets FI. Fish muscle colour parameters reacted differently according to fish feed. Over 6 weeks of feeding L compared to L of initial sampling time showed a decrease more marked for trout fed ASTFI than ALGFI. Fish fed ASTOL and ALGOL displayed intermediary values. On the contrary the other colour parameters increased except hue H(°)ab which did not show any change whatever diet was fed to the fish. Chroma C*, a*, and b* data obtained for fish fed AST were higher than those obtained for fish fed ALG. Muscle astaxanthin concentrations were lower (P < 0.05) for fish fed algae than for those fed synthetic astaxanthin. After 6 weeks of experiment muscle astaxanthin levels were not different (P > 0.05) for fish fed olive or fish oil. Muscle astaxanthin retention was higher (P < 0.05) for fish fed AST than for fish fed ALG.por
dc.identifier.citationCHOUBERT, Georges ; PINTO, Maria Manuela Mendes ; MORAIS, Rui - Pigmenting efficacy of astaxanthin fed to rainbow trout Oncorhynchus mykiss: Effect of dietary astaxanthin and lipid sources. Aquaculture. ISSN 0044-848. Vol. 257, n.º 1-4 (2006), p. 429-436por
dc.identifier.doi10.1016/j.aquaculture.2006.02.055
dc.identifier.urihttp://hdl.handle.net/10400.14/3359
dc.language.isoengpor
dc.publisherElsevierpor
dc.subjectAstaxanthinpor
dc.subjectHaematococcus pluvialispor
dc.subjectFish oilpor
dc.subjectOlive oilpor
dc.subjectPigmentationpor
dc.subjectTroutpor
dc.titlePigmenting efficacy of astaxanthin fed to rainbow trout Oncorhynchus mykiss: Effect of dietary astaxanthin and lipid sourcespor
dc.typejournal article
dspace.entity.typePublication
person.familyNameMorais
person.givenNameRui M. S. C.
person.identifier143926
person.identifier.ciencia-id541B-04AE-0686
person.identifier.orcid0000-0001-5138-6941
person.identifier.ridM-5065-2013
person.identifier.scopus-author-id7005146997
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationfa2b729c-8159-4a98-9bfe-0fa1e98aa9fb
relation.isAuthorOfPublication.latestForDiscoveryfa2b729c-8159-4a98-9bfe-0fa1e98aa9fb

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