Monitoring ovarian cycles, pregnancy and post-partum in captive marsh deer (Blastocerus dichotomus) by measuring fecal steroids

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dc.contributor.authorPolegato, Bruna Furlan [UNESP]
dc.contributor.authorZanetti, Eveline dos Santos [UNESP]
dc.contributor.authorBarbanti Duarte, Jose Mauricio [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-26T17:44:56Z
dc.date.available2018-11-26T17:44:56Z
dc.date.issued2018-01-25
dc.description.abstractThe marsh deer is an endangered species from the marshlands of central South America. This study aimed to characterize certain aspects of the reproductive physiology of marsh deer hinds, including the duration and fecal progestins profile of the estrous cycle, pregnancy and post-partum periods, and evaluate the effect of cloprostenol administration on this species. The experimental group consisted of six females and one fertile male marsh deer. During monitoring of the estrous cycle, the fresh fecal samples were collected daily and, during pregnancy, they were collected twice weekly. The hormonal profile obtained from daily fecal samples indicated that the mean duration of the estrous cycle was 21.3 +/- 1.3 days (6.4 days inter-luteal phase and 14.8 days luteal phase; n = 16 estrous cycles). The mean concentration of fecal progestins in the inter-luteal phase was 834 +/- 311 ng g(-1), in the luteal phase was 3979 +/- 1611 ng g(-1), value between them was 1457 ng g(-1). No significant difference in fecal estrogen concentrations was determined during the estrous cycle. The corpora luteum was not responsive to cloprostenol until Day 6 of the estrous cycle, the period previously described as the inter-luteal phase. Half the females became pregnant following treatment with cloprostenol and two others were fertilized in their natural estrous cycle. Four females delivered fawns, and the mean duration of pregnancy was 253 +/- 4 days. Fecal progestin concentrations were similar to those of the estrous cycle during the first 11 weeks of pregnancy and increased significantly (> 15250 ng g(-1)) thereafter, providing a presumptive diagnosis guideline. Within 60 days of post-partum analyses, 75% of the deer exhibited behavioural estrus and/or ovarian activity. This study generated a broader understanding of the marsh deer species concerning the production of consistent data related to its reproduction. This knowledge can be used to assist the reproductive management of this species and, consequently, to promote its conservation.en
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias Agr & Vet, NUPECCE Nucleo Pesquisa & Conservacao Cervideos, Deer Res & Conservat Ctr,Dept Zootecnia, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias Agr & Vet, NUPECCE Nucleo Pesquisa & Conservacao Cervideos, Deer Res & Conservat Ctr,Dept Zootecnia, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent11
dc.identifierhttp://dx.doi.org/10.1093/conphys/cox073
dc.identifier.citationConservation Physiology. Oxford: Oxford Univ Press, v. 6, 11 p., 2018.
dc.identifier.doi10.1093/conphys/cox073
dc.identifier.fileWOS000423732600001.pdf
dc.identifier.issn2051-1434
dc.identifier.urihttp://hdl.handle.net/11449/163777
dc.identifier.wosWOS:000423732600001
dc.language.isoeng
dc.publisherOxford Univ Press
dc.relation.ispartofConservation Physiology
dc.relation.ispartofsjr1,818
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectNeotropical deer
dc.subjectfecal estrogens
dc.subjectfecal progestins
dc.subjectenzyme immunoassay
dc.subjectcloprostenol
dc.titleMonitoring ovarian cycles, pregnancy and post-partum in captive marsh deer (Blastocerus dichotomus) by measuring fecal steroidsen
dc.typeArtigo
dcterms.licensehttp://www.oxfordjournals.org/access_purchase/self-archiving_policyb.html
dcterms.rightsHolderOxford Univ Press

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