Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/991433
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dc.contributor.authorNOGUEIRA, E.pt_BR
dc.contributor.authorBATISTA, D. S. do N.pt_BR
dc.contributor.authorCOSTA FILHO, L. C. C. dapt_BR
dc.contributor.authorDIAS, A. M.pt_BR
dc.contributor.authorSILVA, J. C. B.pt_BR
dc.contributor.authorÍTAVO, L. C. V.pt_BR
dc.date.accessioned2014-07-29T11:11:11Zpt_BR
dc.date.available2014-07-29T11:11:11Zpt_BR
dc.date.created2014-07-29pt_BR
dc.date.issued2014pt_BR
dc.identifier.citationRevista Brasileira de Zootecnia, v. 43, n. 7, p. 358-362, 2014.pt_BR
dc.identifier.issn1806-9290pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/991433pt_BR
dc.descriptionThe objective of this experiment was to evaluate the effects of replacing eCG with FSH or FSH/LH on the diameter of ovulatory follicles (DOF) and the pregnancy rates (PR) of lactating Bos indicus cows subjected to a synchronization of ovulation protocol and fixed-time artificial insemination (FTAI) based on progesterone, estradiol benzoate (EB), PGF2α, and estradiol cypionate (EC). On day 0, primiparous and multiparous Nellore cows (n = 329) at 68 days postpartum were body condition scored (BCS) and received a P4 implant (PRIMER 1.0 g P4) plus 2 mg EB intramuscularly (IM). At day 8, the implant was removed, and 250 μg cloprostenol were injected IM along with 0.5 mg EC. At the time of implant removal, the animals were divided into one of four treatments: cows received (G1) 1 mL of saline solution IM (Control; n = 80); (G2) 300 IU eCG IM (ECG300; n = 84); (G3) 15 mg FSH IM (Folltropin; n = 82); and (G4) 30 IU FSH/LH IM (Pluset; n = 83); all cows were subjected to FTAI 48-54 h after implant removal (day 10). Transrectal ultrasonography was performed to measure the DOF to FTAI and to estimate the pregnancy rate on day 35. A statistical analysis examined the effects of the treatment, technician, semen, BCS, calf age and parity on PR to FTAI. There was no significant difference in PR and DOF among the treatment groups (G1, 41.3%, 13.1 mm; G2, 46.4%, 14.5 mm; G3, 46.3%, 14.2 mm; and G4, 48.2%, 14.3 mm), but PR was higher in multiparous than in primiparous cows. Commercial FSH solutions (Pluset or Folltropin) do not promote increases in PR or DOF of lactating Nellore cows and are equal to eCG in promoting growth in preovulatory follicles and elevating the PR in Nellore cows with a moderate BCS subjected to a progesterone-based FTAI protocol with EC.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectFSHpt_BR
dc.subjectMultiparouspt_BR
dc.subjectPrimiparouspt_BR
dc.titlePregnancy rate in lactating Bos indicus cows subjected to fixed-time artificial insemination and treated with different follicular growth inducers.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-11-24T11:11:11Zpt_BR
dc.subject.nalthesaurusNellorept_BR
riaa.ainfo.id991433pt_BR
riaa.ainfo.lastupdate2017-11-24 -02:00:00pt_BR
dc.contributor.institutionERIKLIS NOGUEIRA, CPAP; DAYANNA SCHIAVI DO NASC BATISTA, CPAP; LUIZ CARLOS CESAR DA COSTA FILHO, UFMS; ALEXANDRE MENEZES DIAS, UFMS; JULIANA CORRÊA BORGES SILVA, CPAP; LUIS CARLOS VINHAS ÍTAVO, UCDB.pt_BR
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