dc.contributorUniversidade Federal de Lavras (UFLA)
dc.contributorUniversidade Federal Fluminense (UFF)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2019-10-06T15:55:53Z
dc.date.accessioned2022-12-19T18:38:24Z
dc.date.available2019-10-06T15:55:53Z
dc.date.available2022-12-19T18:38:24Z
dc.date.created2019-10-06T15:55:53Z
dc.date.issued2019-01-01
dc.identifierReproduction in Domestic Animals.
dc.identifier1439-0531
dc.identifier0936-6768
dc.identifierhttp://hdl.handle.net/11449/188057
dc.identifier10.1111/rda.13550
dc.identifier2-s2.0-85072016229
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5369095
dc.description.abstractThis study investigated the feasibility of applying fixed-time (cryopreserved) embryo transfer in ewes. Embryos (n = 106) were non-surgically recovered from superovulated donors (n = 39) on day 6–7 after oestrus. Straws containing one or two embryos (morulae and/or blastocysts) subjected to either slow freezing (SF, n = 62) or vitrification (VT, n = 44) were randomly used within fixed-time embryo transfer on Day 8.5. Recipient ewes were nulliparous (n = 58) bearing corpora lutea after synchronous oestrous induction protocol. The pregnancy rate was higher (p =.03) in SF (39.4%) than VT (16.9%) and survival rate tended (p =.08) to be higher in SF than in VT (25.8% vs. 15.9%). Lambing rates were similar (p =.13) between SF (20.9%) and VT (15.9%). Embryos recovered by non-surgical route after cervical dilation treatment and later cryopreserved by either slow freezing or vitrification produced reasonable pregnancy rates after FTET.
dc.languageeng
dc.relationReproduction in Domestic Animals
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectembryo cryopreservation
dc.subjectmultiple ovulation and embryo transfer
dc.subjectovine
dc.titlePregnancy rate after fixed-time transfer of cryopreserved embryos collected by non-surgical route in Lacaune sheep
dc.typeArtículos de revistas


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