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Registro Completo |
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
19/02/2018 |
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Data da última atualização: |
18/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CASTRO, N. A.; NEVES, P. M. A.; CESTARO, J. P.; MELO, V. T. O.; SCHNEIDER, A.; PFEIFER, L. F. M. |
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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. |
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Título: |
Use of prostaglandin F2a as ovulatory stimulus for synchronizing dairy cattle. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Research in Veterinary Science, v. 118, p. 151-154, 2018. |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Estradiol cypionate; GnRH-progesterone; Indutor de ovulação; Ovulação bovina; Ovulation inductor; Prostaglandin. |
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Thesaurus Nal: |
cattle. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172750/1/Useof-Castro.pdf
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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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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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| Registros recuperados : 7 | |
| 5. |  | PFEIFER, L. F. M.; BRITO, L. G.; BARBIERI, F. da S.; CASTRO, N. A.; COSTA, C. M. da; COSTA, O. M.; MELO, V. T. O. de; SCHMITT, E. Estação reprodutiva de curta duração com utilização de IATF em búfalas lactantes. Porto Velho: Embrapa Rondônia, 2013. 4 p. (Embrapa Rondônia. Circular Técnica, 134).| Biblioteca(s): Embrapa Rondônia. |
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| 6. | | 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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| 7. | | MELO, V. T. O. de; CASTRO, N. A. de; BAGON, A.; LIMA, H. de A. de; LAGOS, K. R.; BARBOSA, G. S.; SCHMITT, E.; PFEIFER, L. F. M. Prostaglandina f2α como indutor de ovulação em novilhas púberes. In: CONGRESSO INTERNACIONAL DO LEITE, 12.; WORKSHOP DE POLÍTICAS PÚBLICAS, 12.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 13., 2013, Porto Velho. Anais... Brasília, DF: Embrapa, 2013. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Rondônia. |
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| Registros recuperados : 7 | |
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