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dc.contributor.authorNogueira, Guilherme de Paula-
dc.date.accessioned2014-05-20T15:11:33Z-
dc.date.accessioned2016-10-25T17:45:51Z-
dc.date.available2014-05-20T15:11:33Z-
dc.date.available2016-10-25T17:45:51Z-
dc.date.issued2004-06-01-
dc.identifierhttp://dx.doi.org/10.1590/S0100-879X2004000600018-
dc.identifier.citationBrazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 37, n. 6, p. 913-922, 2004.-
dc.identifier.issn0100-879X-
dc.identifier.urihttp://hdl.handle.net/11449/28076-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/28076-
dc.description.abstractTwelve female ponies were examined daily for 30 days and classified as ovulating (OV; N = 6; 197 ± 6 kg) or prepubertal (PP; N = 6; 196 ± 9 kg). Follicles were detected by ultrasound and gonadotropins quantified by radioimmunoassay. The mean diameter of the largest follicles was significantly larger in OV (38 ± 1 mm) than in PP (26 ± 2 mm) but there was no difference between groups in the size of the second largest follicle. There were more small follicles (<24 mm) in the PP than in the OV group, but PP fillies had a smaller number of follicles >29 mm than the OV fillies. Follicle-stimulating hormone (FSH) levels did not differ between groups but PP fillies had lower luteinizing hormone (LH) peak (8 ± 1 ng/ml) and basal (4 ± 0.5 ng/ml) levels, lower peak magnitude (2 ± 0.2 ng/ml) and period average (5 ± 0.6 ng/ml) than OV fillies (32 ± 4.5, 8 ± 1.2, 17.1 ± 6, and 15 ± 2.3 ng/ml, respectively). The PP group, in contrast to the OV group, showed no relationship between FSH surge and follicle wave emergence. We conclude that an LH concentration higher than 8 ng/ml is needed for follicle growth to a preovulatory size. Wave emergence and FSH secretion seem to be independent events, probably due to an inhibitory neural system in these PP animals. PP fillies may provide a physiological model for the study of follicle wave emergence which apparently does not depend on gonadotropin levels.en
dc.format.extent913-922-
dc.language.isoeng-
dc.publisherAssociação Brasileira de Divulgação Científica (ABRADIC)-
dc.sourceSciELO-
dc.subjectFolliclesen
dc.subjectFSHen
dc.subjectLH and prepubertal filliesen
dc.titleFollicle profile and plasma gonadotropin concentration in pubertal female poniesen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniversidade Estadual Paulista Faculdade de Medicina Veterinária Produção e Saúde Animal-
dc.description.affiliationUnespUniversidade Estadual Paulista Faculdade de Medicina Veterinária Produção e Saúde Animal-
dc.identifier.doi10.1590/S0100-879X2004000600018-
dc.identifier.scieloS0100-879X2004000600018-
dc.rights.accessRightsAcesso aberto-
dc.identifier.fileS0100-879X2004000600018.pdf-
dc.relation.ispartofBrazilian Journal of Medical and Biological Research-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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