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Registro Completo |
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
19/02/2018 |
Data da última atualização: |
18/09/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CASTRO, N. A.; NEVES, P. M. A.; CESTARO, J. P.; MELO, V. T. O.; SCHNEIDER, A.; PFEIFER, L. F. M. |
Afiliação: |
Natália A. Castro, UFPel; P.M.A. Neves, FIMCA; J.P. Cestaro, FIMCA; V.T.O. Melo, FIMCA; A. Schneider, UFPel; LUIZ FRANCISCO MACHADO PFEIFER, CPAF-Rondonia. |
Título: |
Use of prostaglandin F2a as ovulatory stimulus for synchronizing dairy cattle. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Research in Veterinary Science, v. 118, p. 151-154, 2018. |
Idioma: |
Inglês |
Conteúdo: |
The aim of this study was to evaluate if prostaglandin F2α (PGF) can be used to induce ovulation in a GnRHprogesterone based protocol. In Experiment 1 crossbred dairy cows (n = 32) were synchronized with a progesterone-GnRH based protocol for seven days, where the luteolytic dose of 150 μg PGF was given 24 h prior progesterone device removal (CIDR). On Day 8 cows were separated into two groups to receive: 1) 2 mL of Saline (Control Group, n = 15) or 2) 150 μg of PGF (PGF Group, n = 17). Ovulation rate was higher in the PGF than Control group (100% vs 53.3%, P = 0.001, Odds ratio = 30.88). The percentage of cows that ovulated synchronously tended to be higher in the PGF than Control group (P = 0.1, Odds ratio = 9.6). Experiment 2 was performed in a cross-over (3 × 3) design. Crossbred dairy cows (n = 25) received a CIDR for seven days and GnRH on Day 0. Seven days later 150 μg of PGF was given and the progesterone device was removed, and 24 h later cows were distributed into three groups to receive: 1) 2 mL of Saline (Control Group, n = 25), 2) 150 μg of PGF (PGF Group, n = 25) or 3) 1 mg of ECP (ECP Group, n = 23). Diameter of ovulatory follicle was larger in the PGF and Control than ECP Group (P = 0.002, Effect size > 4.0). Synchronized ovulation rate (between 72 and 96 h after CIDR removal) tended to be higher in PGF group in Control group (P = 0.1, Odds ratio = 0.35). Results suggest that PGF is equally efficient to ECP to induce synchronized ovulation in dairy cows subjected to progesterone-GnRH based protocols. MenosThe aim of this study was to evaluate if prostaglandin F2α (PGF) can be used to induce ovulation in a GnRHprogesterone based protocol. In Experiment 1 crossbred dairy cows (n = 32) were synchronized with a progesterone-GnRH based protocol for seven days, where the luteolytic dose of 150 μg PGF was given 24 h prior progesterone device removal (CIDR). On Day 8 cows were separated into two groups to receive: 1) 2 mL of Saline (Control Group, n = 15) or 2) 150 μg of PGF (PGF Group, n = 17). Ovulation rate was higher in the PGF than Control group (100% vs 53.3%, P = 0.001, Odds ratio = 30.88). The percentage of cows that ovulated synchronously tended to be higher in the PGF than Control group (P = 0.1, Odds ratio = 9.6). Experiment 2 was performed in a cross-over (3 × 3) design. Crossbred dairy cows (n = 25) received a CIDR for seven days and GnRH on Day 0. Seven days later 150 μg of PGF was given and the progesterone device was removed, and 24 h later cows were distributed into three groups to receive: 1) 2 mL of Saline (Control Group, n = 25), 2) 150 μg of PGF (PGF Group, n = 25) or 3) 1 mg of ECP (ECP Group, n = 23). Diameter of ovulatory follicle was larger in the PGF and Control than ECP Group (P = 0.002, Effect size > 4.0). Synchronized ovulation rate (between 72 and 96 h after CIDR removal) tended to be higher in PGF group in Control group (P = 0.1, Odds ratio = 0.35). Results suggest that PGF is equally efficient to ECP to induce synchronized ovul... Mostrar Tudo |
Palavras-Chave: |
Estradiol cypionate; GnRH-progesterone; Indutor de ovulação; Ovulação bovina; Ovulation inductor; Prostaglandin. |
Thesaurus Nal: |
cattle. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172750/1/Useof-Castro.pdf
|
Marc: |
LEADER 02339naa a2200265 a 4500 001 2087758 005 2018-09-18 008 2018 bl uuuu u00u1 u #d 100 1 $aCASTRO, N. A. 245 $aUse of prostaglandin F2a as ovulatory stimulus for synchronizing dairy cattle.$h[electronic resource] 260 $c2018 520 $aThe aim of this study was to evaluate if prostaglandin F2α (PGF) can be used to induce ovulation in a GnRHprogesterone based protocol. In Experiment 1 crossbred dairy cows (n = 32) were synchronized with a progesterone-GnRH based protocol for seven days, where the luteolytic dose of 150 μg PGF was given 24 h prior progesterone device removal (CIDR). On Day 8 cows were separated into two groups to receive: 1) 2 mL of Saline (Control Group, n = 15) or 2) 150 μg of PGF (PGF Group, n = 17). Ovulation rate was higher in the PGF than Control group (100% vs 53.3%, P = 0.001, Odds ratio = 30.88). The percentage of cows that ovulated synchronously tended to be higher in the PGF than Control group (P = 0.1, Odds ratio = 9.6). Experiment 2 was performed in a cross-over (3 × 3) design. Crossbred dairy cows (n = 25) received a CIDR for seven days and GnRH on Day 0. Seven days later 150 μg of PGF was given and the progesterone device was removed, and 24 h later cows were distributed into three groups to receive: 1) 2 mL of Saline (Control Group, n = 25), 2) 150 μg of PGF (PGF Group, n = 25) or 3) 1 mg of ECP (ECP Group, n = 23). Diameter of ovulatory follicle was larger in the PGF and Control than ECP Group (P = 0.002, Effect size > 4.0). Synchronized ovulation rate (between 72 and 96 h after CIDR removal) tended to be higher in PGF group in Control group (P = 0.1, Odds ratio = 0.35). Results suggest that PGF is equally efficient to ECP to induce synchronized ovulation in dairy cows subjected to progesterone-GnRH based protocols. 650 $acattle 653 $aEstradiol cypionate 653 $aGnRH-progesterone 653 $aIndutor de ovulação 653 $aOvulação bovina 653 $aOvulation inductor 653 $aProstaglandin 700 1 $aNEVES, P. M. A. 700 1 $aCESTARO, J. P. 700 1 $aMELO, V. T. O. 700 1 $aSCHNEIDER, A. 700 1 $aPFEIFER, L. F. M. 773 $tResearch in Veterinary Science$gv. 118, p. 151-154, 2018.
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Embrapa Rondônia (CPAF-RO) |
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Registros recuperados : 16 | |
10. | | LIMA, R. A. de; NEVES, P. M. A.; MELO, V. T. O. de; SILVA, G. M. da; SILVA, K. A. da; PFEIFER, L. F. M. How body condition score affects milk production and the metabolic parameters in postpartum crossbred dairy cows raised in Amazon biome? Research, Society and Development, v. 11, n. 6, e28511628970, 2022.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
Biblioteca(s): Embrapa Rondônia. |
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11. | | SOUZA, V. L. de; NEVES, P. M. A.; ANDRADE, J. de S.; SILVA, G. M. da; OLIVEIRA JÚNIOR, J. S. de; PFEIFER, L. F. M. Efeito do cio associado a cinética espermática na fertilidade de vacas submetidas a um protocolo de inseminação artificial em tempo fixo. In: ENCONTRO DE INICIAÇÃO À PESQUISA DA EMBRAPA RONDÔNIA, 10.; ENCONTRO DE PÓS-GRADUAÇÃO DA EMBRAPA RONDÔNIA, 5., 2019, Porto Velho. Anais... Porto Velho, RO: Embrapa Rondônia, 2019. p. 16.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Rondônia. |
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12. | | FAGUNDES, E. da S.; SILVA, G. M. da; NEVES, P. M. A.; SOUZA, V. L. de; NUNES, V. R. R.; PFEIFER, L. F. M. Relação entre fertilidade e resposta ovariana de vacas submetidas a protocolo de IATF. In: ENCONTRO DE INICIAÇÃO À PESQUISA DA EMBRAPA RONDÔNIA, 10.; ENCONTRO DE PÓS-GRADUAÇÃO DA EMBRAPA RONDÔNIA, 5., 2019, Porto Velho. Anais... Porto Velho, RO: Embrapa Rondônia, 2019. p. 22.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Rondônia. |
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13. | | FAGUNDES, E. da S.; NEVES, P. M. A.; SILVA, G. M. da; NUNES, V. R. R.; SOUZA, V. L. de; PFEIFER, L. F. M. Relação do grau de acabamento com as perdas pós-resfriamento de carcaças e com o ângulo da garupa em bovinos. In: ENCONTRO DE INICIAÇÃO À PESQUISA DA EMBRAPA RONDÔNIA, 10.; ENCONTRO DE PÓS-GRADUAÇÃO DA EMBRAPA RONDÔNIA, 5., 2019, Porto Velho. Anais... Porto Velho, RO: Embrapa Rondônia, 2019. p. 21.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Rondônia. |
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14. | | PFEIFER, L. F. M.; MOREIRA, E. M.; SILVA, G. M. da; SOUZA, V. L. de; NUNES, V. R. R.; ANDRADE, J. de S.; NEVES, P. M. A.; FERREIRA, R. Effect of estradiol cypionate on estrus expression and pregnancy in timed artificially inseminated beef cows. Livestock Science, v. 231, 103886, 2020.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Rondônia. |
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15. | | PFEIFER, L. F. M.; ANDRADE, J. de S.; MOREIRA, E. M.; SILVA, R. R. da; NEVES, P. M. A.; SILVA, G. M. da S.; LEMOS, I. C.; SCHNEIDER, A. Uterine inflammation and fertility of beef cows subjected to timed AI at different days postpartum. Animal Reproduction Science, v. 197, p. 268-277, 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Rondônia. |
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16. | | NUNES, V. R. R.; MOREIRA, E. M.; SILVA, G. M. da; NEVES, P. M. A.; SOUZA, V. L. de; ANDRADE, J. de S.; SANTOS, I. A. P.; PFEIFER, L. F. M. Impact of supplementation during the rainy and dry seasons on ovarian responses in Girolando cows. In: CONGRESSO INTERNACIONAL DE PECUÁRIA LEITEIRA DA AMAZÔNIA OCIDENTAL, 1., 2019, Rio Branco, AC. Anais... Rio Branco, AC: Edufac, 2019. p. 67.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Rondônia. |
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