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dc.contributor.authorGouveia Nogueira, Marcelo F. [UNESP]
dc.contributor.authorBarros, Breno J.P. [UNESP]
dc.contributor.authorTeixeira, Andrey B. [UNESP]
dc.contributor.authorTrinca, Luzia A. [UNESP]
dc.contributor.authorD'Occhio, Michael J.
dc.contributor.authorBarros, Ciro Moraes [UNESP]
dc.date.accessioned2014-05-27T11:20:27Z
dc.date.available2014-05-27T11:20:27Z
dc.date.issued2002-04-01
dc.identifierhttp://dx.doi.org/10.1016/S0093-691X(02)00680-5
dc.identifier.citationTheriogenology, v. 57, n. 6, p. 1625-1634, 2002.
dc.identifier.issn0093-691X
dc.identifier.urihttp://hdl.handle.net/11449/66859
dc.description.abstractThe aim of this study was to evaluate the effect of delaying ovulation subsequent to superstimulation of follicular growth in beef cows (Bos indicus) on embryo recovery rates and the capacity of embryos to establish pregnancies. Ovulation was delayed by three treatments using either progesterone (CIDR-B®) or a GnRH agonist (deslorelin). Multiparous Nelore cows (n = 24) received three of four superstimulation treatments in an incomplete block design (n = 18 per group). Cows in Groups CTRL, P48 and P60 were treated with a CIDR-B device plus estradiol benzoate (EB, 4 mg, i.m.) on Day-5, while cows in Group D60 were implanted with deslorelin on Day-7. Cows were superstimulated with FSH (Folltropin-V® 200 mg), from Day 0 to 3, using twice daily injections in decreasing amounts. All cows were treated with a luteolytic dose of prostaglandin on Day 2 (08:00 h). CIDR-B devices were removed as follows: Group CTRL, Day 2 (20:00 h); Group P48, Day 4 (08:00 h); Group P60, Day 4 (20:00 h). Cows in Group CTRL were inseminated at 10, 20 and 30 h after first detected estrus. Ovulation was induced for cows in Group P48 (Day 4, 08:00 h) and Groups P60 and D60 (Day 4, 20:00 h) by injection of LH (Lutropin®, 25 mg, i.m.), and these cows were inseminated 10 and 20 h after treatment with LH. Embryos were recovered on Days 11 or 12, graded and transferred to synchronized recipients. Pregnancies were determined by ultrasonography around Day 100. Data were analyzed by mixed procedure, Kruskal-Wallis and Chi-square tests. The number of ova/embryos, transferable embryos (mean ± S.E.M.) and pregnancy rates (%) were as follows, respectively: Group CTRL (10.8 ± 1.8, 6.1 ± 1.3, 51.5), P48 (12.6 ± 1.9, 7.1 ± 1.0, 52.3), P60 (10.5 ± 1.6, 5.7 ± 1.3, 40.0) and D60 (10.3 ± 1.7, 5.0 ± 1.2, 50.0). There were no significant differences among the groups (P > 0.05). It was concluded that fixed time AI in association with induced ovulation did not influence embryo recovery. Furthermore, pregnancy rates in embryos recovered from cows with delayed ovulation were similar to those in embryos obtained from cows treated with a conventional superstimulation protocol. © 2002 Elsevier B.V. All rights reserved.en
dc.format.extent1625-1634
dc.language.isoeng
dc.relation.ispartofTheriogenology
dc.sourceScopus
dc.subjectDelayed ovulation
dc.subjectDeslorelin
dc.subjectEmbryo transfer
dc.subjectProgesterone
dc.subjectSuperovulation
dc.subjectdeslorelin
dc.subjectestradiol
dc.subjectestradiol benzoate
dc.subjectfollitropin
dc.subjectgonadorelin
dc.subjectluteinizing hormone
dc.subjectprogesterone
dc.subjectprostaglandin
dc.subjectdrug derivative
dc.subjecttriptorelin
dc.subjectanimal
dc.subjectanimal disease
dc.subjectanimal experiment
dc.subjectartificial insemination
dc.subjectbreeding success
dc.subjectcattle
dc.subjectcontrolled study
dc.subjectcow
dc.subjectdrug effect
dc.subjectechography
dc.subjectembryo
dc.subjectembryo transfer
dc.subjectestrus
dc.subjectfemale
dc.subjectfertilization
dc.subjectluteolysis
dc.subjectnonhuman
dc.subjectovary
dc.subjectovary follicle
dc.subjectovulation
dc.subjectovulation induction
dc.subjectphysiology
dc.subjectpregnancy
dc.subjectpregnancy rate
dc.subjectpregnancy test
dc.subjectsuperovulation
dc.subjectsurgical technique
dc.subjecttransplantation
dc.subjectBos
dc.subjectBos indicus
dc.subjectAnimals
dc.subjectCattle
dc.subjectEmbryo
dc.subjectEmbryo Transfer
dc.subjectEstradiol
dc.subjectFemale
dc.subjectFollicle Stimulating Hormone
dc.subjectGonadotropin-Releasing Hormone
dc.subjectInsemination, Artificial
dc.subjectLuteinizing Hormone
dc.subjectOvarian Follicle
dc.subjectOvary
dc.subjectOvulation
dc.subjectOvulation Induction
dc.subjectPregnancy
dc.subjectPregnancy Tests
dc.subjectTissue and Organ Harvesting
dc.subjectTriptorelin
dc.titleEmbryo recovery and pregnancy rates after the delay of ovulation and fixed time insemination in superstimulated beef cowsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionAgriculture and Veterinary Science, University of Queensland
dc.description.affiliationDepartment of Pharmacology Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo
dc.description.affiliationDepartment of Biostatistic Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo
dc.description.affiliationFaculty of Natural Resources Agriculture and Veterinary Science, University of Queensland, Brisbane, Qld.
dc.description.affiliationUnespDepartment of Pharmacology Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo
dc.description.affiliationUnespDepartment of Biostatistic Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo
dc.identifier.doi10.1016/S0093-691X(02)00680-5
dc.identifier.wosWOS:000175580600004
dc.rights.accessRightsAcesso restrito
dc.identifier.scopus2-s2.0-0036525834
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Botucatupt
dc.identifier.lattes7795883009987806
unesp.author.lattes7795883009987806
unesp.author.orcid0000-0003-1106-8505[4]
dc.relation.ispartofjcr2.136
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