Publication:
Effect of oestrous expression prior to timed artificial insemination with sexed semen on pregnancy rate in dairy cows

dc.contributor.authorGüner, Barış
dc.contributor.authorErtürk, Melih
dc.contributor.authorDursun, Mehmet
dc.contributor.authorÖztürk, Buse
dc.contributor.authorYılmazbaş-Mecitoğlu, Gülnaz
dc.contributor.authorKeskin, Abdulkadir
dc.contributor.authorDikmen, Serdal
dc.contributor.authorGümen, Ahmet
dc.contributor.buuauthorYılmazbaş-Mecitoğlu, Gülnaz
dc.contributor.buuauthorKESKİN, ABDULKADİR
dc.contributor.buuauthorDİKMEN, SERDAL
dc.contributor.buuauthorGÜMEN, AHMET
dc.contributor.departmentBursa Uludağ Üniversitesi/Veteriner Fakültesi/Jinekoloji Anabilim Dalı.
dc.contributor.departmentBursa Uludağ Üniversitesi/Veteriner Fakültesi/Zootekni Anabilim Dalı.
dc.contributor.orcid0000-0002-5611-4993
dc.contributor.researcheridHGP-8282-2022
dc.contributor.researcheridAAH-3831-2021
dc.contributor.researcheridA-5731-2018
dc.contributor.researcheridAAH-1406-2021
dc.date.accessioned2024-11-12T11:24:54Z
dc.date.available2024-11-12T11:24:54Z
dc.date.issued2022-11-16
dc.description.abstractThe objectives of the study were to determine (1) oestrous expression rate and (2) the effect of oestrous expression prior to progesterone-based Ovsynch protocol on pregnancy rate in Holstein cows. All cows (n = 917) were subjected to 7-day progesterone-based Ovsynch protocol. In this protocol, cows that expressed oestrus before (HEAT1) the scheduled second GnRH were inseminated 20 h later after the onset of oestrus without GnRH administration. Cows that expressed oestrus after the second GnRH administration (HEAT2) or did not express oestrus (NOHEAT) received fixed-timed AI. Oestrous expression was determined by using activity-rumination monitoring system and all cows were inseminated with sexed semen. Oestrous expression rate prior to FTAI was 40.5% and the majority (p < .01) of oestrous expression were in HEAT2 compared with HEAT1 in both primiparous (71.8 vs. 28.1%) and multiparous cows (69.5 vs. 30.5%). The mean interval from intravaginal device removal to the onset of oestrus was 47.4 +/- 0.9 h and 62.9 +/- 0.5 in HEAT1 and HEAT2, respectively. Primiparous cows (47.7%) had a higher (p < .01) expression rate compared with multiparous cows (37.2%). Overall pregnancy rate was 37.4% and there was two-way significant interaction between parity and oestrous expression on pregnancy rate (p < .01). Both primiparous (48.1 vs. 35.8%) and multiparous cows (47.4 vs. 28.4%) that expressed oestrus had greater (p < .01) pregnancy rate compared with cows that did not express oestrus. There was no difference in pregnancy rates of HEAT1 and HEAT2 in both primiparous (44.7 vs. 49.5%) and multiparous cows (47.2 vs. 47.6%). Pregnancy rate was not influenced (p = .21) by milk production (high or low) in both primiparous (47.6 vs. 48.6%) and multiparous (54.9 vs. 42.1%) cows that expressed oestrus, respectively. In conclusion, cows showing oestrus before or after second GnRH of the Ovsynch protocol had greater pregnancy rate than cows not showing oestrus.
dc.identifier.doi10.1111/rda.14293
dc.identifier.endpage348
dc.identifier.issn0936-6768
dc.identifier.issue2
dc.identifier.startpage342
dc.identifier.urihttps://doi.org/10.1111/rda.14293
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/10.1111/rda.14293
dc.identifier.urihttps://hdl.handle.net/11452/47769
dc.identifier.volume58
dc.identifier.wos000884593000001
dc.indexed.wosWOS.SCI
dc.language.isoen
dc.publisherWiley
dc.relation.journalReproduction in Domestic Animals
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectGonadotropin-releasing-hormone
dc.subjectReproductive-performance
dc.subjectOvsynch protocol
dc.subjectSorted sperm
dc.subjectEstrus
dc.subjectFertility
dc.subjectAi
dc.subjectProstaglandin-f2-alpha
dc.subjectEstradiol-17-beta
dc.subjectFollicle
dc.subjectDairy cow
dc.subjectOestrous expression
dc.subjectOvsynch
dc.subjectPregnancy rate
dc.subjectSexed semen
dc.subjectAgriculture
dc.subjectReproductive biology
dc.subjectVeterinary sciences
dc.titleEffect of oestrous expression prior to timed artificial insemination with sexed semen on pregnancy rate in dairy cows
dc.typeArticle
dspace.entity.typePublication
relation.isAuthorOfPublication29ca7366-d20a-4c04-a581-4bf428fe42ed
relation.isAuthorOfPublication67395483-c49a-4930-8ad4-3e45bf39556e
relation.isAuthorOfPublicationc77e3d9c-b5f6-4e5b-bdd0-b1f45438f898
relation.isAuthorOfPublication.latestForDiscovery29ca7366-d20a-4c04-a581-4bf428fe42ed

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