Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/224418 |
Resumo: | Six Alpine goats with an average milk yield of 2.5 kg/day were randomly assigned to two groups of three and allotted to thermoneutral or heat stress conditions, for 56 days in climate chamber room. A crossover experimental design was used. The goats under heat stress were exposed to a diurnal average air temperature plus simulated solar radiation of 33. 84°C. The heat-stressed goats showed elevated respiratory frequency, respiratory minute volume, respiratory evaporation, rectal temperature and sweating rate, while the tidal volume and packed cell volume decreased. Further weight loss, decreased feed intake, and their water consumption doubled. The milk yield, the percentage of fat, protein, lactose and total solid contents decreased. The contents of chloride, calcium and phosphorus did not change. The goats mobilized the respiratory and sweating systems to lose heat to maintain homeothermy. The association between high air temperature and simulated solar radiation reduced the milk yield and the content of some milk components. |
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Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça AlpinaThermal Stress Effects on Milk Yield and Chemical Composition and Thermoregulatory Responses of Lactating Alpines GoatsChemical compositionGoatsMilk productionThermal stressSix Alpine goats with an average milk yield of 2.5 kg/day were randomly assigned to two groups of three and allotted to thermoneutral or heat stress conditions, for 56 days in climate chamber room. A crossover experimental design was used. The goats under heat stress were exposed to a diurnal average air temperature plus simulated solar radiation of 33. 84°C. The heat-stressed goats showed elevated respiratory frequency, respiratory minute volume, respiratory evaporation, rectal temperature and sweating rate, while the tidal volume and packed cell volume decreased. Further weight loss, decreased feed intake, and their water consumption doubled. The milk yield, the percentage of fat, protein, lactose and total solid contents decreased. The contents of chloride, calcium and phosphorus did not change. The goats mobilized the respiratory and sweating systems to lose heat to maintain homeothermy. The association between high air temperature and simulated solar radiation reduced the milk yield and the content of some milk components.Dep. Zootecnia UFRPE, Recife - PEDep. Prod. e Exploracao Anim. FMVZ UNESP, CEP 18618-000, Campus de BotucatuDep. Clin. Veterinária CCA UEL, Londrina - PRDep. Tecnologia de Alimentos FMVZ UNESP, CEP18618-000, Campus de BotucatuDep. Prod. e Exploracao Anim. FMVZ UNESP, CEP 18618-000, Campus de BotucatuDep. Tecnologia de Alimentos FMVZ UNESP, CEP18618-000, Campus de BotucatuUFRPEUniversidade Estadual Paulista (UNESP)UELDe Albuquerque Brasil, Lúcia HelenaWechesler, Francisco Stefano [UNESP]Baccari Jr., FlávioGonçalves, Heraldo Cesar [UNESP]Bonassi, Ismael Antônio [UNESP]2022-04-28T19:56:28Z2022-04-28T19:56:28Z2000-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1632-1641Revista Brasileira de Zootecnia, v. 29, n. 6, p. 1632-1641, 2000.0100-4859http://hdl.handle.net/11449/2244182-s2.0-0346356130Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Zootecniainfo:eu-repo/semantics/openAccess2024-09-09T13:00:56Zoai:repositorio.unesp.br:11449/224418Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-09T13:00:56Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina Thermal Stress Effects on Milk Yield and Chemical Composition and Thermoregulatory Responses of Lactating Alpines Goats |
title |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina |
spellingShingle |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina De Albuquerque Brasil, Lúcia Helena Chemical composition Goats Milk production Thermal stress |
title_short |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina |
title_full |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina |
title_fullStr |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina |
title_full_unstemmed |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina |
title_sort |
Efeitos do Estresse Térmico Sobre a Produção, Composição Química do Leite e Respostas Termorreguladoras de Cabras da Raça Alpina |
author |
De Albuquerque Brasil, Lúcia Helena |
author_facet |
De Albuquerque Brasil, Lúcia Helena Wechesler, Francisco Stefano [UNESP] Baccari Jr., Flávio Gonçalves, Heraldo Cesar [UNESP] Bonassi, Ismael Antônio [UNESP] |
author_role |
author |
author2 |
Wechesler, Francisco Stefano [UNESP] Baccari Jr., Flávio Gonçalves, Heraldo Cesar [UNESP] Bonassi, Ismael Antônio [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
UFRPE Universidade Estadual Paulista (UNESP) UEL |
dc.contributor.author.fl_str_mv |
De Albuquerque Brasil, Lúcia Helena Wechesler, Francisco Stefano [UNESP] Baccari Jr., Flávio Gonçalves, Heraldo Cesar [UNESP] Bonassi, Ismael Antônio [UNESP] |
dc.subject.por.fl_str_mv |
Chemical composition Goats Milk production Thermal stress |
topic |
Chemical composition Goats Milk production Thermal stress |
description |
Six Alpine goats with an average milk yield of 2.5 kg/day were randomly assigned to two groups of three and allotted to thermoneutral or heat stress conditions, for 56 days in climate chamber room. A crossover experimental design was used. The goats under heat stress were exposed to a diurnal average air temperature plus simulated solar radiation of 33. 84°C. The heat-stressed goats showed elevated respiratory frequency, respiratory minute volume, respiratory evaporation, rectal temperature and sweating rate, while the tidal volume and packed cell volume decreased. Further weight loss, decreased feed intake, and their water consumption doubled. The milk yield, the percentage of fat, protein, lactose and total solid contents decreased. The contents of chloride, calcium and phosphorus did not change. The goats mobilized the respiratory and sweating systems to lose heat to maintain homeothermy. The association between high air temperature and simulated solar radiation reduced the milk yield and the content of some milk components. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-11-01 2022-04-28T19:56:28Z 2022-04-28T19:56:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Revista Brasileira de Zootecnia, v. 29, n. 6, p. 1632-1641, 2000. 0100-4859 http://hdl.handle.net/11449/224418 2-s2.0-0346356130 |
identifier_str_mv |
Revista Brasileira de Zootecnia, v. 29, n. 6, p. 1632-1641, 2000. 0100-4859 2-s2.0-0346356130 |
url |
http://hdl.handle.net/11449/224418 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Zootecnia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1632-1641 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
repositoriounesp@unesp.br |
_version_ |
1810021321796485120 |