Short communication: Heat stress does not affect induced luteolysis in Holstein cows

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversity of Calgary-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversity of Wisconsin-
Autor(es): dc.creatorMogollón, H. D.G. [UNESP]-
Autor(es): dc.creatorFerrazza, R. A. [UNESP]-
Autor(es): dc.creatorVallejo, V. H. [UNESP]-
Autor(es): dc.creatorDestro, F. C. [UNESP]-
Autor(es): dc.creatorOchoa, J. C. [UNESP]-
Autor(es): dc.creatorNogueira, C. [UNESP]-
Autor(es): dc.creatorCarvalho, R. F. [UNESP]-
Autor(es): dc.creatorMoraes, L. N. [UNESP]-
Autor(es): dc.creatorRizzoto, G.-
Autor(es): dc.creatorSartori, R.-
Autor(es): dc.creatorWiltbank, M. C.-
Autor(es): dc.creatorFerreira, J. C.P. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:30:04Z-
Data de disponibilização: dc.date.available2022-02-22T00:30:04Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3168/jds.2019-17452-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/200282-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/200282-
Descrição: dc.descriptionHeat stress (HS) has deleterious effects on bovine reproduction, including prolongation of the luteal phase in Holstein cows, perhaps due to compromised luteolysis. The objective was to characterize effects of HS on luteolytic responses of nonlactating Holstein cows given 25 or 12.5 mg of PGF2α on d 7 of the estrous cycle. Cows were randomly distributed into 2 environments: thermoneutral (n = 12; 25°C) or HS (n = 12; 36°C). In each environment, cows were treated with 2 mL of saline, 25 or 12.5 mg of PGF2α (n = 4 cows per group). The HS environment induced a significant increase in rectal temperature and respiratory rate compared with the thermoneutral environment. Heat stress did not have significant effects on luteolytic responses or circulating progesterone concentrations. Rapid and complete luteolysis occurred in all cows given 25 mg of PGF2α and in 4 of 8 cows given 12.5 mg; the other 4 cows given 12.5 mg had partial luteolysis, with circulating progesterone concentrations initially suppressed, but subsequently rebounding. Therefore, we conclude that HS does not change corpus luteum sensitivity to PGF2α.-
Descrição: dc.descriptionDepartment of Animal Reproduction and Veterinary Radiology School of Veterinary Medicine and Animal Science São Paulo State University (UNESP), Rua Prof. Dr. Walter Maurício Correa s/n 18618-681-
Descrição: dc.descriptionDepartment of Morphology Institute of Biosciences University of Sao Paulo State (UNESP), R. Prof. Dr. Antônio Celso Wagner Zanin, 250, Distrito de Rubião Junior-
Descrição: dc.descriptionSchool of Agriculture São Paulo State University (UNESP)-
Descrição: dc.descriptionDepartment of Production Animal Health Faculty of Veterinary Medicine University of Calgary-
Descrição: dc.descriptionDepartment of Animal Science Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo, Av. Pádua Dias, 11-
Descrição: dc.descriptionDepartment of Animal and Dairy Sciences University of Wisconsin-
Descrição: dc.descriptionDepartment of Animal Reproduction and Veterinary Radiology School of Veterinary Medicine and Animal Science São Paulo State University (UNESP), Rua Prof. Dr. Walter Maurício Correa s/n 18618-681-
Descrição: dc.descriptionDepartment of Morphology Institute of Biosciences University of Sao Paulo State (UNESP), R. Prof. Dr. Antônio Celso Wagner Zanin, 250, Distrito de Rubião Junior-
Descrição: dc.descriptionSchool of Agriculture São Paulo State University (UNESP)-
Formato: dc.format5629-5633-
Idioma: dc.languageen-
Relação: dc.relationJournal of Dairy Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectcattle-
Palavras-chave: dc.subjectcorpus luteum-
Palavras-chave: dc.subjectprogesterone-
Palavras-chave: dc.subjectprostaglandin-
Título: dc.titleShort communication: Heat stress does not affect induced luteolysis in Holstein cows-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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