Re-used progesterone devices efficiently synchronise oestrus and ovulation after autoclaving process in Toggenburg goats during the breeding season

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dc.contributor.authorSouza-Fabjan, Joanna Maria Gonçalves de
dc.contributor.authorTorres, Ciro Alexandre Alves
dc.contributor.authorMaia, Ana Lúcia Rosa Silva e
dc.contributor.authorBrandão, Felipe Zandonadi
dc.contributor.authorOba, Eunice [UNESP]
dc.contributor.authorBertoldo, Michael J.
dc.contributor.authorFonseca, Jeferson Ferreira da
dc.contributor.institutionUniversidade Estadual do Ceará (UECE)
dc.contributor.institutionUniversidade Federal de Viçosa (UFV)
dc.contributor.institutionUniversidade Federal Fluminense (UFF)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of Sydney
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2015-10-21T13:09:57Z
dc.date.available2015-10-21T13:09:57Z
dc.date.issued2015-01-01
dc.description.abstractThis study compared new and previously used (and autoclaved) progesterone devices for synchronisation of oestrus during the breeding season in Toggenburg goats. Nulliparous (n = 17) or lactating (n = 50) received new intravaginal devices containing 0.3 g progesterone (CONTROL), or similar devices previously used for either 6 (USED6) or 12 (USED12) days and subsequently autoclaved. All goats received 5 mg dinoprost at device insertion and 200 IU equine chorionic gonadotropin 5 days later and all devices were removed after 6 days. After device removal, females were mated by fertile bucks. Ovarian ultrasonography was performed every 12 h after device removal until ovulation detection. Blood samples were collected for determination of plasma progesterone concentration in different moments and intervals (from 7 days before device insertion to 3 days after its removal). There was no difference (P > 0.05) among groups CONTROL, USED6 or USED12 for: oestrus response [75% (18/24), 77% (17/22) or 71% (15/21), respectively]; duration of oestrus (30.7 +/- 3.4, 31.8 +/- 1.7 or 32.8 +/- 3.4 h), percentage of ovulating goats [67% (6/9), 78% (7/9) or 56% (5/9)], ovulation rate (1.3 +/- 0.2, 1.4 +/- 0.2 or 1.8 +/- 0.4 units of corpora lutea), average follicle diameter (6.2 +/- 0.1, 6.7 +/- 0.1 or 6.8 +/- 0.3 mm) and pregnancy rate [54% (13/24), 50% (11/22) or 48% (10/21)]. Plasma progesterone concentrations were not different (P > 0.05) for does among treatments and between nulliparous and lactating females. In conclusion, autoclaved, previously used intravaginal progesterone devices are effective in synchronising oestrus and ovulation in cyclic goats during the breeding season.en
dc.description.affiliationUniversidade Estadual do Ceará, Laboratório de Fisiologia e Controle de Reprodução, Faculdade de Veterinária
dc.description.affiliationUniversidade Federal de Viçosa, Departamento de Zootecnia
dc.description.affiliationUniversidade Federal Fluminense, Faculdade de Medicina Veterinária
dc.description.affiliationUniversity of Sidney, Faculty of Veterinary Science
dc.description.affiliationUnespUniversidade Estadual Paulista, Departamento de Reprodução Animal e Radiologia Veterinária, Faculdade de Medicina Veterinária e Zootecnia de Botucatu
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent818-822
dc.identifierhttp://www.publish.csiro.au/?paper=AN14056
dc.identifier.citationAnimal Production Science. Clayton: Csiro Publishing, v. 55, n. 6, p. 818-822, 2015.
dc.identifier.doi10.1071/AN14056
dc.identifier.issn1836-0939
dc.identifier.lattes9224380586557664
dc.identifier.urihttp://hdl.handle.net/11449/128450
dc.identifier.wosWOS:000353906400017
dc.language.isoeng
dc.publisherCsiro Publishing
dc.relation.ispartofAnimal Production Science
dc.relation.ispartofjcr1.371
dc.relation.ispartofsjr0,637
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectCIDRen
dc.subjectOestrus synchronisationen
dc.subjectOvarian follicular dynamicsen
dc.titleRe-used progesterone devices efficiently synchronise oestrus and ovulation after autoclaving process in Toggenburg goats during the breeding seasonen
dc.typeArtigo
dcterms.licensehttp://www.publish.csiro.au/nid/72/aid/2405.htm
dcterms.rightsHolderCsiro Publishing
unesp.author.lattes9224380586557664
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt

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