Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1087758
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dc.contributor.authorCASTRO, N. A.
dc.contributor.authorNEVES, P. M. A.
dc.contributor.authorCESTARO, J. P.
dc.contributor.authorMELO, V. T. O.
dc.contributor.authorSCHNEIDER, A.
dc.contributor.authorPFEIFER, L. F. M.
dc.date.accessioned2018-02-20T00:32:35Z-
dc.date.available2018-02-20T00:32:35Z-
dc.date.created2018-02-19
dc.date.issued2018
dc.identifier.citationResearch in Veterinary Science, v. 118, p. 151-154, 2018.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1087758-
dc.descriptionThe 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.
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectEstradiol cypionate
dc.subjectProstaglandin
dc.subjectOvulation inductor
dc.subjectGnRH-progesterone
dc.subjectIndutor de ovulação
dc.subjectOvulação bovina
dc.titleUse of prostaglandin F2a as ovulatory stimulus for synchronizing dairy cattle.
dc.typeArtigo de periódico
dc.date.updated2018-09-18T11:11:11Zpt_BR
dc.subject.nalthesauruscattlept_BR
riaa.ainfo.id1087758
riaa.ainfo.lastupdate2018-09-18 -03:00:00
dc.contributor.institutionNatália 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.
Aparece nas coleções:Artigo em periódico indexado (CPAF-RO)

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