Locally adapted Brazilian ewes with different coat colors maintain homeothermy during the year in an equatorial semiarid environment

dc.contributor.authorLeite, Jacinara Hody Gurgel Morais
dc.contributor.authorDa Silva, Roberto Gomes [UNESP]
dc.contributor.authorda Silva, Wallace Sostene Tavares
dc.contributor.authorda Silva, Wilma Emanuela
dc.contributor.authorPaiva, Renato Diógenes Macedo
dc.contributor.authorSousa, José Ernandes Rufino
dc.contributor.authorAsensio, Luis Alberto Bermejo
dc.contributor.authorFaçanha, Débora Andrea Evangelista
dc.contributor.institutionUFERSA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidad de La Laguna
dc.date.accessioned2018-12-11T16:54:24Z
dc.date.available2018-12-11T16:54:24Z
dc.date.issued2018-09-01
dc.description.abstractThe present paper aimed to show the thermoregulatory responses of locally adapted Morada Nova sheep with different coat colors that were exposed to direct solar radiation in an equatorial semiarid region. Animals were classified into four groups according to the coat color as follows: (1) dark red, (2) intermediate red, (3) light red, and (4) white coats. Forty Morada Nova ewes were observed in for 7 consecutive months. The experimental variables measured were rectal temperature (RT), skin surface temperature (ST), respiratory rate (RR), skin surface evaporation (CE), respiratory evaporation (RE), and heat exchange by convection (HC) and radiation (R). Data were collected from 1100 to 1400 h after the animals were exposed to 30 min direct sunlight. The results showed that all groups maintained homeothermy. The RR was higher in the animals of groups 1 to 3, which also showed higher values for ST when compared to the white-coated animals. Sensible heat exchange mechanisms were not important for heat loss, and R was a significant source of heat gain from the environment for the animals. Groups 1, 2, and 3 used RR more intensely than group 4 (P value = 0.001); however, CE was higher for the white-coated animals. It was concluded that Morada Nova sheep are well adapted to the semiarid environment, regardless of coat color.en
dc.description.affiliationUniversidade Federal Rural do Semi-Arido UFERSA
dc.description.affiliationUniversidade Estadual Paulista UNESP, Jaboticabal campus
dc.description.affiliationUniversidad de La Laguna, San Cristobal de La Laguna
dc.description.affiliationUnespUniversidade Estadual Paulista UNESP, Jaboticabal campus
dc.format.extent1635-1644
dc.identifierhttp://dx.doi.org/10.1007/s00484-018-1563-x
dc.identifier.citationInternational Journal of Biometeorology, v. 62, n. 9, p. 1635-1644, 2018.
dc.identifier.doi10.1007/s00484-018-1563-x
dc.identifier.file2-s2.0-85049789353.pdf
dc.identifier.issn0020-7128
dc.identifier.scopus2-s2.0-85049789353
dc.identifier.urihttp://hdl.handle.net/11449/171206
dc.language.isoeng
dc.relation.ispartofInternational Journal of Biometeorology
dc.relation.ispartofsjr0,897
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAdaptation
dc.subjectCutaneous evaporation
dc.subjectEquatorial semiarid
dc.subjectHomeothermy
dc.subjectNaturalized breed
dc.subjectThermoregulatory mechanisms
dc.titleLocally adapted Brazilian ewes with different coat colors maintain homeothermy during the year in an equatorial semiarid environmenten
dc.typeArtigo

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