Age and gender influence the cardiorespiratory function and metabolic rate of broiler chicks during normocapnia and hypercapnia

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dc.contributor.authorEspinha, Livia P. [UNESP]
dc.contributor.authorSouza, Fernando A. [UNESP]
dc.contributor.authorCapalbo, Aretuza C. [UNESP]
dc.contributor.authorBicego, Kenia C. [UNESP]
dc.contributor.authorMacari, Marcos [UNESP]
dc.contributor.authorGargaglioni, Luciane H. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionINCT Fisiol Comparada
dc.date.accessioned2015-03-18T15:54:02Z
dc.date.available2015-03-18T15:54:02Z
dc.date.issued2014-08-15
dc.description.abstractPulmonary ventilation (V-E), body temperature (Tb), mean arterial pressure (MAP), heart rate (f(H)) and metabolic rate (V-O2) were measured in 10 (d10)- and 21 (d21)-day-old male and female chicks exposed to 7% CO2. Under normocapnia, V-E was higher in d10 chicks than in d21 due to a higher tidal volume; in females a higher respiratory frequency (f(R)) was also observed. The d10 birds presented higher f(H) and V-O2. The d21 females showed the highest CO2 ventilatory response due to increased f(R). MAP did not change during hypercapnia while a hypercapnic bradycardia occurred, except in d21 females. Hypercapnia induced a drop in Tb in all groups and an increase in V-O2 in d21 males. Overall, no gender effect is observed in cardiorespiratoly and metabolic variables in d10 and d21 chicks under normocapnia, the differences in V-E and f(H) between ages may be related to distinct metabolic demands of these phases. The d21 female chicks seem to be more sensitive to hypercapnia. (C) 2014 Elsevier B.V. All rights reserved.en
dc.description.affiliationSao Paulo State Univ, UNESP FCAV, Dept Anim Morphol & Physiol, Jaboticabal, SP, Brazil
dc.description.affiliationINCT Fisiol Comparada, Natl Inst Sci & Technol Comparat Physiol, Jaboticabal, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, UNESP FCAV, Dept Anim Morphol & Physiol, Jaboticabal, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 11/02280-5
dc.format.extent50-56
dc.identifierhttp://dx.doi.org/10.1016/j.resp.2014.05.013
dc.identifier.citationRespiratory Physiology & Neurobiology. Amsterdam: Elsevier Science Bv, v. 200, p. 50-56, 2014.
dc.identifier.doi10.1016/j.resp.2014.05.013
dc.identifier.issn1569-9048
dc.identifier.lattes5713558572926669
dc.identifier.urihttp://hdl.handle.net/11449/116732
dc.identifier.wosWOS:000340224300009
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofRespiratory Physiology & Neurobiology
dc.relation.ispartofjcr1.792
dc.relation.ispartofsjr0,682
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectBirden
dc.subjectCO2 chemosensitivityen
dc.subjectVentilationen
dc.subjectThermoregulationen
dc.subjectMetabolic rateen
dc.titleAge and gender influence the cardiorespiratory function and metabolic rate of broiler chicks during normocapnia and hypercapniaen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes5713558572926669
unesp.author.orcid0000-0002-6850-7145[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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Artigos - Morfologia e Fisiologia Animal - FCAV