Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | University of Florida | - |
Autor(es): dc.contributor | Universidade Estadual Paulista (UNESP) | - |
Autor(es): dc.contributor | South Florida Center for Fertility | - |
Autor(es): dc.creator | Schmitt, É J.P. | - |
Autor(es): dc.creator | Diaz, T. | - |
Autor(es): dc.creator | Barros, C. M. [UNESP] | - |
Autor(es): dc.creator | De La Sota, R. L. | - |
Autor(es): dc.creator | Drost, M. | - |
Autor(es): dc.creator | Fredriksson, E. W. | - |
Autor(es): dc.creator | Staples, C. R. | - |
Autor(es): dc.creator | Thorner, R. | - |
Autor(es): dc.creator | Thatcher, W. W. | - |
Data de aceite: dc.date.accessioned | 2022-08-04T22:01:00Z | - |
Data de disponibilização: dc.date.available | 2022-08-04T22:01:00Z | - |
Data de envio: dc.date.issued | 2022-04-28 | - |
Data de envio: dc.date.issued | 2022-04-28 | - |
Data de envio: dc.date.issued | 1996-01-01 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.2527/1996.7451074x | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/219192 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/219192 | - |
Descrição: dc.description | A series of experiments with Holstein heifers was conducted to develop the capability of inducing accessory corpus luteum (CL) with a GnRH agonist (Buserelin, 8 μg; GnRHa) or hCG (3,000 IU) to increase plasma progesterone concentrations (Exp. 1, 2, and 3) and to test whether induction of accessory CL with hCG will increase conception rates in heifers (Exp. 4) and lactating cows (Exp. 5). In Exp. 1, heifers were treated on d 5 after estrus with GnRHa (n = 8) or saline (n = 7); heifers in Exp. 2 received hCG (n = 5) or saline (n = 4) on d 5. Experiment 3 allowed a contemporary evaluation of heifers treated on d 5 with GnRHa (n = 6), hCG (n = 6), saline (n = 6), or GnRHa at d 5 and hCG at the time of the induced ovulation (n = 5). The GnRHa and hCG were equally effective in inducing an accessory CL (93% induction rate), but the subsequent increase in progesterone concentrations was greater in hCG-treated heifers. A greater half life of hCG may provide longer LH-like stimulation of the first-wave follicle and subsequent developing accessory CL or a greater luteotropic effect on the original CL. Induction of an accessory CL with hCG on d 5 or 6 after insemination did not increase pregnancy rates in fertile heifers (Exp. 4: hCG = 64.8% vs control = 62.9%; n = 243) or lactating dairy cows during summer heat stress (Exp. 5: hCG = 24.2% vs control = 23.5%; n = 201). | - |
Descrição: dc.description | Dept. of Dairy and Poultry Sciences University of Florida, Gainesville, FL 32611 | - |
Descrição: dc.description | Dept. of Large Anim. Clin. Sciences University of Florida, Gainesville, FL 32611 | - |
Descrição: dc.description | Department of Pharmacology UNESP, São Paulo 18600 | - |
Descrição: dc.description | South Florida Center for Fertility, Miami, FL 33143 | - |
Descrição: dc.description | Department of Pharmacology UNESP, São Paulo 18600 | - |
Formato: dc.format | 1074-1083 | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Journal of Animal Science | - |
???dc.source???: dc.source | Scopus | - |
Palavras-chave: dc.subject | Corpus Luteum | - |
Palavras-chave: dc.subject | Fertility | - |
Palavras-chave: dc.subject | Follicles | - |
Palavras-chave: dc.subject | GnRH Agonist | - |
Palavras-chave: dc.subject | hCG | - |
Palavras-chave: dc.subject | Progesterone | - |
Título: dc.title | Differential Response of the Luteal Phase and Fertility in Cattle Following Ovulation of the First-Wave Follicle with Human Chorionic Gonadotropin or an Agonist of Gonadotropin-Releasing Hormone | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: