Steelhead trout Oncorhynchus mykiss metabolic rate is affected by dietary Aloe vera inclusion but not by mounting an immune response against formalin-killed Aeromonas salmonicida

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dc.contributor.authorZanuzzo, F. S. [UNESP]
dc.contributor.authorUrbinati, E. C. [UNESP]
dc.contributor.authorNash, G. W.
dc.contributor.authorGamperl, A. K.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionMem Univ Newfoundland
dc.date.accessioned2015-10-21T13:11:16Z
dc.date.available2015-10-21T13:11:16Z
dc.date.issued2015-07-01
dc.description.abstractThe oxygen consumption (MO2) of two groups of 10 degrees C acclimated steelhead trout Oncorhynchus mykiss was measured for 72 h after they were given a 100 mu l kg(-1) intraperitoneal injection of formalin-killed Aeromonas salmonicida (ASAL) or phosphate-buffered saline (PBS). In addition, plasma cortisol levels were measured in fish from both groups prior to, and 1 and 3 h after, they were given a 30 s net stress. The first group was fed an unaltered commercial diet for 4 weeks, whereas the second group was fed the same diet but with 05% (5 g kg(-1)) Aloe vera powder added; A. vera has potential as an immunostimulant for use in aquaculture, but its effects on basal and acute phase response (APR)-related metabolic expenditures and stress physiology, are unknown. Injection of ASAL v. PBS had no measurable effect on the MO2 of O. mykiss indicating that the APR in this species is not associated with any net increase in energy expenditure. In contrast, incorporating 05% A. vera powder into the feed decreased routine metabolic rate by c. 8% in both injection groups and standard metabolic rate in the ASAL-injected group (by c. 4 mg O-2 kg(-1) h(-1); 5%). Aloe vera fed fish had resting cortisol levels that were approximately half of those in fish on the commercial diet (c. 25 v. 50 ng ml(-1)), but neither this difference nor those post-stress reached statistical significance (P > 0.05).en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Fisiol, BR-18618970 Rubiao, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Ctr Aquicultura Unesp, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationMem Univ Newfoundland, Dept Ocean Sci, St John, NF A1C 5S7, Canada
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Fisiol, BR-18618970 Rubiao, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Ctr Aquicultura Unesp, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC)
dc.description.sponsorshipIdCAPES: 1879-13-8
dc.format.extent43-53
dc.identifierhttp://onlinelibrary.wiley.com/doi/10.1111/jfb.12690/abstract
dc.identifier.citationJournal Of Fish Biology. Hoboken: Wiley-blackwell, v. 87, n. 1, p. 43-53, 2015.
dc.identifier.doi10.1111/jfb.12690
dc.identifier.issn0022-1112
dc.identifier.urihttp://hdl.handle.net/11449/128588
dc.identifier.wosWOS:000357686800004
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal Of Fish Biology
dc.relation.ispartofjcr1.702
dc.relation.ispartofsjr0,822
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectacute phase responseen
dc.subjectbacterial antigenen
dc.subjectcortisolen
dc.subjectimmune functionen
dc.subjectimmunostimulanten
dc.subjectmetabolic costsen
dc.titleSteelhead trout Oncorhynchus mykiss metabolic rate is affected by dietary Aloe vera inclusion but not by mounting an immune response against formalin-killed Aeromonas salmonicidaen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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Artigos - Fisiologia - IBB
Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp