Publication: Effect of oestrous expression prior to timed artificial insemination with sexed semen on pregnancy rate in dairy cows
dc.contributor.author | Güner, Barış | |
dc.contributor.author | Ertürk, Melih | |
dc.contributor.author | Dursun, Mehmet | |
dc.contributor.author | Öztürk, Buse | |
dc.contributor.author | Yılmazbaş-Mecitoğlu, Gülnaz | |
dc.contributor.author | Keskin, Abdulkadir | |
dc.contributor.author | Dikmen, Serdal | |
dc.contributor.author | Gümen, Ahmet | |
dc.contributor.buuauthor | Yılmazbaş-Mecitoğlu, Gülnaz | |
dc.contributor.buuauthor | KESKİN, ABDULKADİR | |
dc.contributor.buuauthor | DİKMEN, SERDAL | |
dc.contributor.buuauthor | GÜMEN, AHMET | |
dc.contributor.department | Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Jinekoloji Anabilim Dalı. | |
dc.contributor.department | Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Zootekni Anabilim Dalı. | |
dc.contributor.orcid | 0000-0002-5611-4993 | |
dc.contributor.researcherid | HGP-8282-2022 | |
dc.contributor.researcherid | AAH-3831-2021 | |
dc.contributor.researcherid | A-5731-2018 | |
dc.contributor.researcherid | AAH-1406-2021 | |
dc.date.accessioned | 2024-11-12T11:24:54Z | |
dc.date.available | 2024-11-12T11:24:54Z | |
dc.date.issued | 2022-11-16 | |
dc.description.abstract | The 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.doi | 10.1111/rda.14293 | |
dc.identifier.endpage | 348 | |
dc.identifier.issn | 0936-6768 | |
dc.identifier.issue | 2 | |
dc.identifier.startpage | 342 | |
dc.identifier.uri | https://doi.org/10.1111/rda.14293 | |
dc.identifier.uri | https://onlinelibrary.wiley.com/doi/10.1111/rda.14293 | |
dc.identifier.uri | https://hdl.handle.net/11452/47769 | |
dc.identifier.volume | 58 | |
dc.identifier.wos | 000884593000001 | |
dc.indexed.wos | WOS.SCI | |
dc.language.iso | en | |
dc.publisher | Wiley | |
dc.relation.journal | Reproduction in Domestic Animals | |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi | |
dc.rights | info:eu-repo/semantics/closedAccess | |
dc.subject | Gonadotropin-releasing-hormone | |
dc.subject | Reproductive-performance | |
dc.subject | Ovsynch protocol | |
dc.subject | Sorted sperm | |
dc.subject | Estrus | |
dc.subject | Fertility | |
dc.subject | Ai | |
dc.subject | Prostaglandin-f2-alpha | |
dc.subject | Estradiol-17-beta | |
dc.subject | Follicle | |
dc.subject | Dairy cow | |
dc.subject | Oestrous expression | |
dc.subject | Ovsynch | |
dc.subject | Pregnancy rate | |
dc.subject | Sexed semen | |
dc.subject | Agriculture | |
dc.subject | Reproductive biology | |
dc.subject | Veterinary sciences | |
dc.title | Effect of oestrous expression prior to timed artificial insemination with sexed semen on pregnancy rate in dairy cows | |
dc.type | Article | |
dspace.entity.type | Publication | |
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relation.isAuthorOfPublication.latestForDiscovery | 29ca7366-d20a-4c04-a581-4bf428fe42ed |