Cold-induced enhancement of avian uncoupling protein expression, heat production, and triiodothyronine concentrations in broiler chicks

dc.contributor.authorCollin, A.
dc.contributor.authorBuyse, J.
dc.contributor.authorvan As, P.
dc.contributor.authorDarras, V. M.
dc.contributor.authorMalheiros, R. D.
dc.contributor.authorMoraes, VMB
dc.contributor.authorReyns, G. E.
dc.contributor.authorTaouis, M.
dc.contributor.authorDecuypere, E.
dc.contributor.institutionINRA
dc.contributor.institutionKatholieke Univ Leuven
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:18:03Z
dc.date.available2014-05-20T13:18:03Z
dc.date.issued2003-01-01
dc.description.abstractThe relationships among avian uncoupling protein (avUCP) mRNA expression, heat production, and thyroid hormone metabolism were investigated in 7-14-day-old broiler chicks (Gallus gallus) exposed to a low temperature (cold-exposed chicks, CE) or a thermoneutral temperature (TN). After 7 days of exposure, CE chicks exhibited higher heat production (+83%, P < 0.01), avUCP mRNA expression (+20%, P < 0.01), and circulating triiodothyronine (T-3) levels (+104%, P = 0.07) for non-statistically different body weights and feed intake between 3 and 7 days of exposure as compared to TN chicks. Plasma thyroxine (T-4) concentration was clearly decreased in CE chicks (-33%, P = 0.06). The lower hepatic inner-ring deiodination activity (-47%) and the higher renal outer-ring deiodination activity (+75%) measured in CE compared to TN chicks could partly account for their higher plasma T3 concentrations. This study describes for the first time the induction of avUCP mRNA expression by low temperature in chickens, as it has been previously shown in ducklings, and supports the possible involvement of avUCP in avian thermogenesis. (C) 2003 Elsevier B.V. (USA). All rights reserved.en
dc.description.affiliationINRA, Rech Avicoles Stn, F-37380 Nouzilly, France
dc.description.affiliationKatholieke Univ Leuven, Lab Physiol Domest Anim, Dept Anim Prod, B-3001 Louvain, Belgium
dc.description.affiliationKatholieke Univ Leuven, Lab Comparat Endocrinol, B-3000 Louvain, Belgium
dc.description.affiliationUNESP, Fac Ciencas Agrarias & Vet, Dept Zootecnia, BR-14870000 Jaboticabal, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Ciencas Agrarias & Vet, Dept Zootecnia, BR-14870000 Jaboticabal, SP, Brazil
dc.format.extent70-77
dc.identifierhttp://dx.doi.org/10.1016/S0016-6480(02)00571-3
dc.identifier.citationGeneral and Comparative Endocrinology. San Diego: Academic Press Inc. Elsevier B.V., v. 130, n. 1, p. 70-77, 2003.
dc.identifier.doi10.1016/S0016-6480(02)00571-3
dc.identifier.issn0016-6480
dc.identifier.urihttp://hdl.handle.net/11449/4303
dc.identifier.wosWOS:000180732600010
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofGeneral and Comparative Endocrinology
dc.relation.ispartofjcr2.564
dc.relation.ispartofsjr1,101
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectthermogenesispt
dc.subjectdeiodinationpt
dc.subjectlow ambient temperaturept
dc.subjectthermoregulationpt
dc.titleCold-induced enhancement of avian uncoupling protein expression, heat production, and triiodothyronine concentrations in broiler chicksen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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