Role of coat colour in body heat regulation among goats and hairy sheep in tropics
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/15739 |
Resumo: | This experiment was conducted during the hottest and the leanest period of the year in the tropical semi-arid northeast of Brazil to evaluate the relative response of black and white varieties (with the colour of skin and of hair being the same) of goats and hairy sheep to grazing under direct solar radiation. There was a marked increase in midside-skin (MS), ear-skin (ES) and rectal temperatures (RT) and respiratory rate (RR) at 2 P.M. The afternoon increase was more in sheep in MS, RT and RR, but ES increased more in goats. Black animals had uniformly higher MS. White sheep had higher ES but in goats colour had no effect. Right ES was higher in sheep and there was some tendency of higher right ES in general. The black goats respired at much higher rates than the white, but in sheep, colour did not influence RR. Colour of animals did not influence RT. There was significant day-to-day variation, possibly associated with small fluctuations in environmental temperature, in MS, ES and RR but not in RT. The results indicate that goats appear to be better adapted than hairy sheep and white goats better than black goats under local climatic conditions. |
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Role of coat colour in body heat regulation among goats and hairy sheep in tropicsInfluência da cor da pelagem na regulação do calor em caprinos e ovinos sem-lã no trópicosolar radiation; tropical region; adaptability; physiological responseregião tropical; radiação solar; adaptabilidade; respostas fisiológicasThis experiment was conducted during the hottest and the leanest period of the year in the tropical semi-arid northeast of Brazil to evaluate the relative response of black and white varieties (with the colour of skin and of hair being the same) of goats and hairy sheep to grazing under direct solar radiation. There was a marked increase in midside-skin (MS), ear-skin (ES) and rectal temperatures (RT) and respiratory rate (RR) at 2 P.M. The afternoon increase was more in sheep in MS, RT and RR, but ES increased more in goats. Black animals had uniformly higher MS. White sheep had higher ES but in goats colour had no effect. Right ES was higher in sheep and there was some tendency of higher right ES in general. The black goats respired at much higher rates than the white, but in sheep, colour did not influence RR. Colour of animals did not influence RT. There was significant day-to-day variation, possibly associated with small fluctuations in environmental temperature, in MS, ES and RR but not in RT. The results indicate that goats appear to be better adapted than hairy sheep and white goats better than black goats under local climatic conditions.Este experimento foi conduzido na região tropical do nordeste Brasileiro para avaliar a resposta relativa ao calor dos caprinos e ovinos sem-lã de pelagem (pele + pêlo) branca e preta em pastejo e expostos diretamente à radiação solar. Houve um aumento marcante nas temperaturas da pele da costela (PC), pele da orelha (PO) e retal (TR) e no rítmo respiratório (RR) às 14h. À tarde, a elevação foi maior em ovinos na PC, TR e no RR, mas PO aumentou mais nos caprinos. Animais pretos tinham, uniformemente, maior PC. Os ovinos brancos exibiram maior PO, mas no caprinos a cor não influenciou. ES direita foi superior em ovinos e houve tendência da PO direita ser, em geral, superior. Caprinos de cor preta apresentaram maior elevação no RR do que os de cor branca, mas nos ovinos a cor não influenciou o RR. Cor da pelagem não teve influência na TR. Houve uma variação diária significante na PC, PO e RR, mas não na TR, possivelmente associado com flutuações na temperatura ambiental. Resultados indicam que caprinos parecem ser melhor adaptados do que ovinos sem-lã e caprinos brancos melhor que caprinos pretos sob as condições climáticas locais.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPant, Kant PrasadArruda, Francisco de Assis V.Figueiredo, Élsio Antonio P. de2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15739Pesquisa Agropecuaria Brasileira; v.20, n.6, jun. 1985; 717-726Pesquisa Agropecuária Brasileira; v.20, n.6, jun. 1985; 717-7261678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/15739/9774info:eu-repo/semantics/openAccess2014-04-17T11:54:14Zoai:ojs.seer.sct.embrapa.br:article/15739Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T11:54:14Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics Influência da cor da pelagem na regulação do calor em caprinos e ovinos sem-lã no trópico |
title |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics |
spellingShingle |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics Pant, Kant Prasad solar radiation; tropical region; adaptability; physiological response região tropical; radiação solar; adaptabilidade; respostas fisiológicas |
title_short |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics |
title_full |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics |
title_fullStr |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics |
title_full_unstemmed |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics |
title_sort |
Role of coat colour in body heat regulation among goats and hairy sheep in tropics |
author |
Pant, Kant Prasad |
author_facet |
Pant, Kant Prasad Arruda, Francisco de Assis V. Figueiredo, Élsio Antonio P. de |
author_role |
author |
author2 |
Arruda, Francisco de Assis V. Figueiredo, Élsio Antonio P. de |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Pant, Kant Prasad Arruda, Francisco de Assis V. Figueiredo, Élsio Antonio P. de |
dc.subject.por.fl_str_mv |
solar radiation; tropical region; adaptability; physiological response região tropical; radiação solar; adaptabilidade; respostas fisiológicas |
topic |
solar radiation; tropical region; adaptability; physiological response região tropical; radiação solar; adaptabilidade; respostas fisiológicas |
description |
This experiment was conducted during the hottest and the leanest period of the year in the tropical semi-arid northeast of Brazil to evaluate the relative response of black and white varieties (with the colour of skin and of hair being the same) of goats and hairy sheep to grazing under direct solar radiation. There was a marked increase in midside-skin (MS), ear-skin (ES) and rectal temperatures (RT) and respiratory rate (RR) at 2 P.M. The afternoon increase was more in sheep in MS, RT and RR, but ES increased more in goats. Black animals had uniformly higher MS. White sheep had higher ES but in goats colour had no effect. Right ES was higher in sheep and there was some tendency of higher right ES in general. The black goats respired at much higher rates than the white, but in sheep, colour did not influence RR. Colour of animals did not influence RT. There was significant day-to-day variation, possibly associated with small fluctuations in environmental temperature, in MS, ES and RR but not in RT. The results indicate that goats appear to be better adapted than hairy sheep and white goats better than black goats under local climatic conditions. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/15739 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15739 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/15739/9774 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.20, n.6, jun. 1985; 717-726 Pesquisa Agropecuária Brasileira; v.20, n.6, jun. 1985; 717-726 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416684689686528 |