Effect of the interval from follicle aspiration to initiation of lengthened FSH treatment on follicular superstimulatory and superovulatory responses and embryo production in lactating Simmental cows

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dc.contributor.authorCirit, Umut
dc.contributor.authorOzmen, Mehmet Ferit
dc.contributor.authorKucukaslan, Ibrahim
dc.contributor.authorKose, Mehmet
dc.contributor.authorKutsal, Huseyin Gokhan
dc.contributor.authorCinar, Elif Merve
dc.date.accessioned2024-04-24T16:18:29Z
dc.date.available2024-04-24T16:18:29Z
dc.date.issued2019
dc.departmentDicle Üniversitesien_US
dc.description.abstractThe present study evaluated follicular superstimulatory (FSS) and superovulatory (SOV) responses and in vivo embryo production in lactating Simmental cows treated with FSH starting 1 or 2 days after follicle aspiration (FA). The performance of a lengthened superovulation program, named 6dFSH-P36-hCG60, is described. At random stages of the estrous cycle, cows (n = 52) were subjected to ultrasound-guided transvaginal aspiration of all follicles >= 5 mm. After FA, cows were randomly assigned to one of two groups in which FSH treatments started 1 or 2 days after FA (groups FA-1D and FA-2D, respectively). Cows were superstimulated with a total of 500 mu g pFSH over 6 days on a decreasing dose schedule and were pre-treated with a single dose of 400 IU of eCG 24 h before the start of FSH treatments. Follicular superstimulatory (the mean numbers of follicles >= 8 mm on the day of hCG treatment) and SOV responses (the mean numbers of CL and cows with >= 3 CL at the time of collection) were similar in FA-1D and FA-2D groups. However, when compared to FA-1D group, the number of unfertilized ova tended to decrease (0.4 vs 1.7; P = 0.065) and percentage of fertilized ova tended to increase (95.8% vs 84.6%; P = 0.066) in FA-2D group. Moreover, the mean numbers and percentages of both transferable embryos (8.0 and 77.6% vs 6.4 and 57.7%) and freezable embryos (5.3 and 51.5% vs 3.5 and 31.1%) were numerically higher in FA-2D group than FA-1D group. The results of the study suggest that starting a lengthened superovulation programs in Simmental cows 2 days after FA has potential to increase percentage of fertilized ova and the number of transferable and freezable embryos, although new studies may be needed to confirm this findings. (C) 2019 Elsevier Inc. All rights reserved.en_US
dc.identifier.doi10.1016/j.theriogenology.2019.02.008
dc.identifier.endpage224en_US
dc.identifier.issn0093-691X
dc.identifier.issn1879-3231
dc.identifier.pmid30784808
dc.identifier.scopus2-s2.0-85062147022
dc.identifier.scopusqualityQ1
dc.identifier.startpage218en_US
dc.identifier.urihttps://doi.org/10.1016/j.theriogenology.2019.02.008
dc.identifier.urihttps://hdl.handle.net/11468/16128
dc.identifier.volume128en_US
dc.identifier.wosWOS:000466618700027
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherElsevier Science Incen_US
dc.relation.ispartofTheriogenology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSuperovulationen_US
dc.subjectCattleen_US
dc.subjectFollicle Aspirationen_US
dc.subjectEcgen_US
dc.subjectFshen_US
dc.titleEffect of the interval from follicle aspiration to initiation of lengthened FSH treatment on follicular superstimulatory and superovulatory responses and embryo production in lactating Simmental cowsen_US
dc.titleEffect of the interval from follicle aspiration to initiation of lengthened FSH treatment on follicular superstimulatory and superovulatory responses and embryo production in lactating Simmental cows
dc.typeArticleen_US

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