Evaluation of the factors that affect the pregnancy rates during embryo transfer in beef heifers

dc.contributor.authorAlkan, Hasan
dc.contributor.authorKaraşahin, Tahir
dc.contributor.authorDursun, Şükrü
dc.contributor.authorErdem, Hüseyin
dc.contributor.authorSatılmış, Fatma
dc.contributor.authorGüler, Mehmet
dc.date.accessioned2020-02-17T08:15:24Z
dc.date.available2020-02-17T08:15:24Z
dc.date.issued2020
dc.departmentVeteriner Fakültesi
dc.descriptionKaraşahin, Tahir ( Aksaray, Yazar ) Dursun, Şükrü ( Aksaray, Yazar )
dc.description.abstractThe aim of this study was to evaluate the effects of the transfer side, transfer location, cervix transfer score, type and diameter of corpus luteum (CL) during embryo transfer on pregnancy rates in beef heifers. Progesterone-based synchronization and superovulation protocol were applied to Simmental cows used as donors (n = 168). Uterine flushings were performed on day 7 following artificial insemination. Obtained Code I (excellent or good) and II (fair) quality embryos were transferred to recipient beef heifers (n = 561). During embryo transfer, side of transfer (right or left), transfer location (the cranial or middle third of uterine horn), cervix transfer score (easy, moderate or difficult) and type (CLa, CLb and CLc) and diameter of CL were determined. Pregnancy rates following the transfer of Code I and II embryos were 44.66% and 33.07%, respectively (p <.05). The rates of pregnancy after transfers to the right and left uterine horn were 37% and 42.2%, respectively (p >.05). The pregnancy rates were 41.2%, 34.9% and 30.3% for cervix transfer scores as easy, moderate and difficult, respectively (p >.05). Pregnancy rates after transfer to the cranial third and middle third were 41.06% and 29.67%, respectively (p <.05). According to types of CL, pregnancy rates were 31.7%, 40.4% and 45.3% for CLa, CLb and CLc, respectively (p <.05). Moreover, it was found that as the CL diameter increased, the pregnancy rates increased. As a result, it was concluded that there was no effect of side of transfer and cervix transfer score, but embryo quality, transfer location, type and diameter of CL had significant effects on the pregnancy rate during embryo transfer in beef heifers.
dc.identifier.doi10.1111/rda.13623
dc.identifier.endpage-en_US
dc.identifier.issn0936-6768
dc.identifier.issue-en_US
dc.identifier.pmid31916290
dc.identifier.scopusqualityQ2
dc.identifier.startpage-en_US
dc.identifier.urihttps:/dx.doi.org/10.1111/rda.13623
dc.identifier.urihttps://hdl.handle.net/20.500.12451/7219
dc.identifier.volume-en_US
dc.identifier.wosWOS:000510195000001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherBlackwell Publishing Ltd
dc.relation.ispartofReproduction in Domestic Animals
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEmbryo Transfer
dc.subjectHeifer
dc.subjectPregnancy Rate
dc.titleEvaluation of the factors that affect the pregnancy rates during embryo transfer in beef heifers
dc.typeArticle

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