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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
22/08/2017 |
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Data da última atualização: |
22/08/2017 |
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Autoria: |
LEITE, J. H. G. M.; FAÇANHA, D. A. E.; COSTA, W. P.; CHAVES, D. F.; GUILHERMINO, M. M.; SILVA, W. S. T.; BERMEJO, L. A. |
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Afiliação: |
Jacinara Hody Gurgel Morais Leite, Universidade Federal Rural do Semiárido (UFERSA) - Mossoró, RN, Brazil; Débora Andréa Evangelista Façanha, State University of Ceará (UFC) - Fortaleza, Ceará, Brazil; Wirton Peixoto Costa; Dowglish Ferreira Chaves; Magda Maria Guilhermino, Universidade Federal do Rio Grande do Norte (UFRN) - Natal, RN, Brazil; Wallace Sostene Tavares Silva; Luis Alberto Bermejo, Universidad de La Laguna - Santa Cruz de Tenerife, Canary Islands, Spain. |
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Título: |
Thermoregulatory responses related to coat traits of Brazilian native ewes: an adaptive approach. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Applied Animal Research, |
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DOI: |
http://dx.doi.org/10.1080/09712119.2017.1302877 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Semi-arid conditions can adversely affect livestock productivity and change certain physiological parameters. The relationship between hair coat and thyroxine levels in Morada Nova ewes was evaluated through environmental factors, such as air temperature, relative air humidity, radiant and Black Globe Humidity Index to gain a better understanding of thermoregulation mechanisms in these animals. Measurements were taken from July to January in 383 Morada Nova ewes. The variables studied included rectal temperature (RT), respiratory rate (RR), coat thickness (CT), hair length (HL), hair diameter (HD), hair density (D) and thyroid hormones. The data underwent multivariate statistical analyses and a significant inverse relationship was found between coat traits and Thyroxine (T4). The animals that exhibited greater HL, coat density and CT showed lower T4 concentrations. Coat traits showed a strong interaction with physiological mechanisms and can be considered relevant in maintaining homeostasis. Hair traits play an important role in this process, since T4 reduction was stronger in animals that showed difficulties in eliminating heat, which were the ones that had greater HL, hair density and HD. By contrast, animals with a hair coat more favourable to heat losses had higher levels of thyroid hormones. |
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Thesaurus Nal: |
Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
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008 2017 bl uuuu u0uu1 u #d
024 7 $ahttp://dx.doi.org/10.1080/09712119.2017.1302877$2DOI
100 1 $aLEITE, J. H. G. M.
245 $aThermoregulatory responses related to coat traits of Brazilian native ewes$ban adaptive approach.
260 $aJournal of Applied Animal Research,$c2017
520 $aAbstract: Semi-arid conditions can adversely affect livestock productivity and change certain physiological parameters. The relationship between hair coat and thyroxine levels in Morada Nova ewes was evaluated through environmental factors, such as air temperature, relative air humidity, radiant and Black Globe Humidity Index to gain a better understanding of thermoregulation mechanisms in these animals. Measurements were taken from July to January in 383 Morada Nova ewes. The variables studied included rectal temperature (RT), respiratory rate (RR), coat thickness (CT), hair length (HL), hair diameter (HD), hair density (D) and thyroid hormones. The data underwent multivariate statistical analyses and a significant inverse relationship was found between coat traits and Thyroxine (T4). The animals that exhibited greater HL, coat density and CT showed lower T4 concentrations. Coat traits showed a strong interaction with physiological mechanisms and can be considered relevant in maintaining homeostasis. Hair traits play an important role in this process, since T4 reduction was stronger in animals that showed difficulties in eliminating heat, which were the ones that had greater HL, hair density and HD. By contrast, animals with a hair coat more favourable to heat losses had higher levels of thyroid hormones.
650 $aSheep
700 1 $aFAÇANHA, D. A. E.
700 1 $aCOSTA, W. P.
700 1 $aCHAVES, D. F.
700 1 $aGUILHERMINO, M. M.
700 1 $aSILVA, W. S. T.
700 1 $aBERMEJO, L. A.
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| Registros recuperados : 2 | |
| 1. |  | FAÇANHA, D. A. E.; VASCONCELOS, A. M. de; LIMA, F. R. G.; ELOY, A. M. X.; OLIVEIRA, A. L. de; GUILHERMINO, M. M.; LANDIM, A. V. Características termorreguladoras e desempenho de cabras leiteiras no terço inicial da lactação em clima tropical. Revista Portuguesa de Ciências Veterinárias, Lisboa, v. 111, n. 583-584, p. 151-156, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 2. | | CHAVES, D. F.; MORAIS, D. A. E. F.; VALE, A. M. do; MORAEIS, J. H. G.; FACO, O.; GUILHERMINO, M. M. Parâmetros hematológicos e escore corporal de ovelhas da raça Morada Nova em ambiente quente. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 46., 2009, Maringá. Inovação científica e tecnológica em zootecnia: anais dos resumos. Maringa: SBZ: UEM, 2009. 3 f. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 2 | |
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