Effects of GnRH, PGF2α and oxytocin treatments on conception rate at the time of artificial insemination in lactating dairy cows

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dc.contributor.authorÇevik, Samet
dc.contributor.buuauthorGümen, Ahmet
dc.contributor.buuauthorKeskin, Abdülkadir
dc.contributor.buuauthorMecitoğlu, Gülnaz Yılmazbaş
dc.contributor.buuauthorBilen, Ebru Karakaya
dc.contributor.buuauthorBalcı, Faruk
dc.contributor.departmentUludağ Üniversitesi/Veterinerlik Fakültesi/Kadın Hastalıkları ve Doğum Anabilim Dalı.tr_TR
dc.contributor.departmentUludağ Üniversitesi/Veterinerlik Fakültesi/Zootekni ve Hayvan Besleme Bölümü.tr_TR
dc.contributor.orcid0000-0003-2817-3221tr_TR
dc.contributor.researcheridAAH-1406-2021tr_TR
dc.contributor.researcheridAAG-4440-2019tr_TR
dc.contributor.researcheridAAH-3831-2021tr_TR
dc.contributor.scopusid6602393069tr_TR
dc.contributor.scopusid24473229800tr_TR
dc.contributor.scopusid36457964000tr_TR
dc.contributor.scopusid36457784500tr_TR
dc.contributor.scopusid16062981700tr_TR
dc.date.accessioned2022-03-01T06:34:13Z
dc.date.available2022-03-01T06:34:13Z
dc.date.issued2011
dc.description.abstractIn several studies, hormones such as gonadotropin-releasing hormone (GnRH), prostaglandins and oxytocin were used to increase pregnancy rate by inducing ovulation and improving the sperm transport in the female reproductive tract in lactating dairy cattle. The objective of this study was to compare the effects of GnRH, prostaglandin F-2 alpha (PGF(2 alpha)) and oxytocin treatments at the time of artificial insemination (AI) after spontaneous oestrus on the conception rate (CR) of lactating dairy cows. Oestrus was detected by visual observations by experienced personnel. All cows (n = 430, 308 Holstein-Frisian and 122 Swedish-Red dairy cows) were inseminated based on the am/pm rule by veterinarians of the farm. After AI, cows were alternately assigned to one of the four treatment groups: (1) GnRH (n = 113); (2) PGF(2 alpha) (n = 106); (3) oxytocin (n = 106) and (4) non-treated control (n = 105). Pregnancy diagnosis was performed 28-34 and 58-64 days post-insemination by transrectal ultrasonography. Conception rates on days 28-34 and 58-64 were not different among GnRH (46.0%; 52/113 and 44.3%; 50/113), PGF(2 alpha) (37.7%; 40/106 and 35.9%; 38/106) and control (49.5%; 52/105 and 47.6%; 50/105) groups. However, conception rates were lower (P = 0.02) in oxytocin (31.1%; 33/106 and 30.2%; 32/106) than in GnRH and control groups on days 28-34 and 58-64. Other covariant factors, such as milk production, days in milk (DIM), breed, parity, service number did not affect the conception rate. Thus, there were no beneficial effects of treatments with GnRH and PGF(2 alpha) at the time of AI, and oxytocin had an adverse effect on CR in lactating dairy cows in this study.en_US
dc.identifier.citationGümen, A. vd. (2011). "Effects of GnRH, PGF2α and oxytocin treatments on conception rate at the time of artificial insemination in lactating dairy cows". Czech Journal of Animal Science, 56(6), 279-283.en_US
dc.identifier.endpage283tr_TR
dc.identifier.issn1212-1819
dc.identifier.issn1805-9309
dc.identifier.issue6tr_TR
dc.identifier.scopus2-s2.0-79960162660tr_TR
dc.identifier.startpage279tr_TR
dc.identifier.urihttps://doi.org/10.17221/1283-CJAS
dc.identifier.urihttps://www.agriculturejournals.cz/web/cjas.htm?volume=56&firstPage=279&type=publishedArticle
dc.identifier.urihttp://hdl.handle.net/11452/24753
dc.identifier.volume56tr_TR
dc.identifier.wos000292454600004tr_TR
dc.indexed.scopusScopusen_US
dc.indexed.wosSCIEen_US
dc.language.isoenen_US
dc.publisherCzech Academy Agricultural Sciencesen_US
dc.relation.collaborationSanayitr_TR
dc.relation.journalCzech Journal of Animal Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergitr_TR
dc.relation.tubitakTOVAG 107O227tr_TR
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAgricultureen_US
dc.subjectCowen_US
dc.subjectSpontaneous oestrusen_US
dc.subjectGnRHen_US
dc.subjectPGF(2 alpha)en_US
dc.subjectOxytocinen_US
dc.subjectPregnancyen_US
dc.subjectGonadotropin-releasing-hormoneen_US
dc.subjectPregnancy ratesen_US
dc.subjectReproductive-performanceen_US
dc.subjectLuteinizing-hormoneen_US
dc.subjectCattleen_US
dc.subjectCattleen_US
dc.subjectProgesteroneen_US
dc.subjectEstrusen_US
dc.subject1sten_US
dc.subjectProstaglandinstr_TR
dc.subjectIntrauterineen_US
dc.subjectBosen_US
dc.subject.scopusRepeat Breeder; Conception Rate; Corpus Luteumen_US
dc.subject.wosAgriculture, dairy & animal scienceen_US
dc.titleEffects of GnRH, PGF2α and oxytocin treatments on conception rate at the time of artificial insemination in lactating dairy cowsen_US
dc.typeArticle
dc.wos.quartileQ2en_US

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