Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/736929
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorSIQUEIRA, L. G. B.
dc.contributor.authorTORRES, C. A. A.
dc.contributor.authorSOUZA, E. D. DE
dc.contributor.authorMONTEIRO JÚNIOR, P. L. J.
dc.contributor.authorARASHIRO, E. K. N.
dc.contributor.authorCAMARGO, L. S. de A.
dc.contributor.authorFERNANDES, C. A. C.
dc.contributor.authorVIANA, J. H. M.
dc.date.accessioned2024-02-15T18:32:27Z-
dc.date.available2024-02-15T18:32:27Z-
dc.date.created2010-04-27
dc.date.issued2009
dc.identifier.citationTheriogenology, v. 72, n. 7, p. 949-958, 2009.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/736929-
dc.descriptionThe objective was to investigate the influence of corpora lutea physical and functional characteristics on pregnancy rates in bovine recipients synchronized for fixed-time embryo transfer (FTET). Crossbred (Bos taurus taurus × Bos taurus indicus) nonlactating cows and heifers (n = 259) were treated with the following protocol: 2 mg estradiol benzoate (EB) plus an intravaginal progesterone device (CIDR 1.9 g progesterone; Day 0); 400 IU equine chorionic gonadotropin (eCG; Day 5); prostaglandin F2α (PGF2α) and CIDR withdrawal (Day 8); and 1 mg EB (Day 9). Ovarian ultrasonography and blood sample collections were performed on Day 17. Of the 259 cattle initially treated, 197 (76.1%) were suitable recipients; they received a single, fresh, quality grade 1 or 2 in vivo–derived (n = 90) or in vitro–produced (n = 87) embryo on Day 17. Pregnancy rates (23 d after embryo transfer) were higher for in vivo–derived embryos than for in vitro–produced embryos (58.8% vs. 31.0%, respectively; P < 0.001). Mean (±SD) plasma progesterone (P4) concentration was higher in cattle that became pregnant than that in nonpregnant cattle (5.2 ± 5.0 vs. 3.8 ± 2.4 ng/mL; P = 0.02). Mean pixel values (71.8 ± 1.3 vs. 71.2 ± 1.1) and pixel heterogeneity (14.8 ± 0.3 vs. 14.5 ± 0.5) were similar between pregnant and nonpregnant recipients (P > 0.10). No significant relationship was detected between pregnancy outcome and plasma P4, corpus luteum area, or corpus luteum echotexture. Embryo type, however, affected the odds of pregnancy. In conclusion, corpus luteum–related traits were poor predictors of pregnancy in recipients. The type of embryo, however, was a major factor affecting pregnancy outcome.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectEchotexture
dc.titlePregnancy rates and corpus luteum-related factors affecting pregnancy establishment in bovine recipients synchronized for fixed-time embryo transfer.
dc.typeArtigo de periódico
dc.subject.nalthesauruscorpus luteum
dc.subject.nalthesaurusultrasonography
riaa.ainfo.id736929
riaa.ainfo.lastupdate2024-02-15
dc.identifier.doihttps://doi.org/10.1016/j.theriogenology.2009.06.013
dc.contributor.institutionLUIZ GUSTAVO BRUNO SIQUEIRA, CPAC; CIRO ALEXANDRE ALVES TORRES, UFV; ELIZA DINIZ DE SOUZA, UFES; P. L. J. MONTEIRO JÚNIOR; E. K. N. ARASHIRO, UFF; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; CARLOS A. C. FERNANDES, Universidade de Alfenas; JOAO HENRIQUE MOREIRA VIANA, CNPGL.
Aparece nas coleções:Artigo em periódico indexado (CNPGL)

Arquivos associados a este item:
Arquivo TamanhoFormato 
Pregnancy-rates-and-corpus-luteum-related-factors-affecting-pregnancy.pdf168,37 kBAdobe PDFVisualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace