Coat and skin morphology of hair sheep breeds in an equatorial semi-arid environment

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Autor(es): dc.contributorUniv Fed Paraiba-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniv Witwatersrand-
Autor(es): dc.creatorCabral Menezes de Amorim, Mikael Leal-
Autor(es): dc.creatorSaraiva, Edilson Paes-
Autor(es): dc.creatorCarvalho Fonseca, Vinicius de Franca [UNESP]-
Autor(es): dc.creatorGuerra, Ricardo Romao-
Autor(es): dc.creatorCaetano Goncalves dos Santos, Severino Guilherme-
Autor(es): dc.creatorMelo Costa, Cintia Carol de [UNESP]-
Autor(es): dc.creatorVieira Almeida, Maria Elivania-
Autor(es): dc.creatorPinheiro, Antonio da Costa-
Autor(es): dc.creatorPimenta Filho, Edgard Cavalcanti-
Data de aceite: dc.date.accessioned2022-02-22T00:04:05Z-
Data de disponibilização: dc.date.available2022-02-22T00:04:05Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2019-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jtherbio.2019.06.007-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/194845-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/194845-
Descrição: dc.descriptionThis study aims to address if are there annual changes in the hair coat traits and skin morphology of hair sheep breeds raised in an equatorial semi-arid region? Coat and skin samples were taken from thirty Morada Nova (4 +/- 2 years old; red coat; +/- SD) and twenty Santa Ines multiparous ewes (5 +/- 2 years old; brown and black coat; +/- SD) every 3 months over a year. Hair coat traits included thickness (mm), density (number of hairs cm(-2)), length (mm), and diameter (mm), plus epidermal and dermal thickness (mu m), sweat glands and blood capillaries area (mu m cm(-2)) were determined. Means of solar irradiance and ambient air temperature were higher between September and December. Annual changes (P < 0.05) in hair density, diameter, length and thickness, as well as the skin blood capillaries and sweat gland area differed between breeds. The modifications on hair coat traits resulted in minor changes on the effective thermal conductivity of the hair coat surface both for Morada Nova and Santa Ines sheep. Nevertheless, it was clearly evident that the overall cutaneous thermal insulation for Morada Nova sheep was lowest in September that was coupled with lower hair density, coat thickness, and higher sweat gland and blood capillary area (P < 0.05). In conclusion, even in an equatorial region, phenotypic acclimatization on morphological traits of cutaneous surface and skin traits can modify the overall thermal insulation of sheep breeds.-
Descrição: dc.descriptionUniv Fed Paraiba, Anim Biometeorol & Ethol Grp BIOET, Areia, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Innovat Grp Anim Biometeorol INOBIO MANERA, Jaboticabal, Brazil-
Descrição: dc.descriptionUniv Fed Paraiba, Dept Vet Sci, Areia, Brazil-
Descrição: dc.descriptionUniv Witwatersrand, Sch Physiol, BFRG, Johannesburg, South Africa-
Descrição: dc.descriptionSao Paulo State Univ, Innovat Grp Anim Biometeorol INOBIO MANERA, Jaboticabal, Brazil-
Formato: dc.format103-110-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationJournal Of Thermal Biology-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectCutaneous surface-
Palavras-chave: dc.subjectThermal insulation-
Palavras-chave: dc.subjectTropical climate-
Palavras-chave: dc.subjectPhenotypic acclimatization-
Título: dc.titleCoat and skin morphology of hair sheep breeds in an equatorial semi-arid environment-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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