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Effects of PGF(2A) administration at the onset or the end of a short-term progestagen treatment in Serrana goats

2010Conference paper Open access
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dc.contributor.authorCorreia, Teresa Montenegro
dc.contributor.authorAzevedo, Jorge
dc.contributor.authorMendonça, Álvaro
dc.contributor.authorFontes, Paulo
dc.contributor.authorGalvão, Lurdes
dc.contributor.authorCardoso, Manuel
dc.contributor.authorVelasco, Helena
dc.contributor.authorMaurício, Raimundo
dc.contributor.authorValentim, Ramiro
dc.date.accessioned2011-05-26T16:23:20Z
dc.date.available2011-05-26T16:23:20Z
dc.date.issued2010
dc.description.abstractIn order to assess the reproductive effects of Prostaglandin F2alfa (PGF2alfa) administration at the onset or the end of a progestagen treatment in Portuguese Serrana goats, an initial group of 44 females (5 were later rejected for several reasons) aged between 3 and 7 years was used. In May (beginning of the breeding season), all goats were treated with an intravaginal sponge impregnated with 20 mg of fluorogestone acetate (FGA) for 5 days and injected (i.m.) with 300 UI of eCG at sponge removal time. Half goats received an injection (i.m.) of 100 ug of cloprostenol at sponge insertion time (SI) and the other half at sponge removal time (SR). Blood samples were taken for progesterone determination and 4 intact bucks with harness marker were used to identify the estrus. A transrectal ultrasound scanning was performed for pregnancy diagnosis 41 days after eCG administration. PGF2alfa injection at the onset of the FGA treatment had a positive effect in estrus (SI – 100.0% vs. SR – 90.9%; Chi2 = 9.424; P<0.01), ovulation (SI – 100.0% vs. SR – 95.5%; Chi2 = 4.082; P<0.01) and pregnancy (SI – 100.0% vs. SR – 90.9%; Chi2 = 9.424; P<0.01) and fertility (SI – 100.0% vs. SR – 72.7%; Chi2 = 31.214; P<0.001) rates. Time of PGF2alfa injection just had no significant effect in prolificacy (SI – 2.1 ± 0.8 vs. SR – 2.2 ± 0.8; P>0.05). In conclusion, data indicate that PGF2alfa should be administrated at the onset of the FGA treatment.por
dc.identifier.citationCorreia, Teresa; Azevedo, J.; Mendonça, Álvaro; Fontes, P.; Galvão, Lurdes; Cardoso, Manuel; Velasco, Helena; Maurício, Raimundo; Valentim, Ramiro (2010). Effects of PGF2alfa administration at the onset or the end of a short-term progestagen treatment in Serrana goats. Reproduction in Domestic Animals. ISSN 0936-6768. 45:Suppl. 3, p. 83por
dc.identifier.issn0936-6768
dc.identifier.urihttp://hdl.handle.net/10198/4609
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWileypor
dc.titleEffects of PGF(2A) administration at the onset or the end of a short-term progestagen treatment in Serrana goatspor
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.endPage83por
oaire.citation.issue45 (Supl 3)por
oaire.citation.startPage83por
oaire.citation.titleReproduction in Domestic Animalspor
person.familyNameCorreia
person.familyNameMendonça
person.familyNameMaurício
person.familyNameValentim
person.givenNameTeresa Montenegro
person.givenNameÁlvaro
person.givenNameRaimundo
person.givenNameRamiro
person.identifier.ciencia-id1610-5AFD-75A1
person.identifier.ciencia-id8A1F-7B31-A119
person.identifier.ciencia-idB01B-96FF-D524
person.identifier.orcid0000-0002-9640-8320
person.identifier.orcid0000-0002-4099-9547
person.identifier.orcid0000-0002-3514-988X
person.identifier.ridK-2190-2014
person.identifier.scopus-author-id36607620800
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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relation.isAuthorOfPublication.latestForDiscovery18be4d07-9fbf-409a-b0a9-c78af6b49b19

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