Effect of timing of artificial insemination after synchronization of ovulation on reproductive performance in Holstein dairy cows

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dc.contributor.authorBayril, Tahir
dc.contributor.authorYilmaz, Orhan
dc.date.accessioned2024-04-24T16:02:23Z
dc.date.available2024-04-24T16:02:23Z
dc.date.issued2013
dc.departmentDicle Üniversitesien_US
dc.description.abstractThe objective of this study was to determine the effect of timing of artificial insemination on pregnancy rates, calving rates, abortion rates, twinning rates, and calf gender ratio after synchronization of ovulation with Ovsynch protocol in Holstein dairy cows. The ovulation of 219 lactating Holstein dairy cows was synchronized using the Ovsynch protocol. Therefore, cows received an injection of GnRH followed by an injection of prostaglandin F-2 alpha 7 days later and a second treatment with GnRH 2 days later. Cows were artificially inseminated at 0, 12, or 24 h after the second injection of GnRH. Reproductive performance did not differ between cows inseminated at 0 h (n = 82), 12 h (n = 66), or 24 h (n = 71) after the last injection of GnRH (pregnancy rate: 0 h 48 %, 12 h 47 %, 24 h 52 %; abortion rate: 0 h 5 %, 12 h 0 %, 24 h 11 %; calving rate: 0 h 43 %, 12 h 47 %, 24 h 41 %; twinning rate: 0 h 2 %, 12 h 0 %, 24 h 0 %; calf gender ratio (F/M): 0 h 61:39 %, 12 h 48:52 %, 24 h 39:61 %; P > 0.05). Pregnancy rates for cows inseminated in postpartum times of 50-75, 76-100, and > 100 days within the first and a parts per thousand yen3 parities were statistically similar (P > 0.05), but pregnancy rates for cows inseminated at different postpartum times of 50-75, 76-100, and > 100 days within the second parity were different (P < 0.01). In general, pregnancy rates of cows inseminated at different postpartum times (P < 0.01) and parities (P < 0.001) differed. The findings of the current study showed that rates of pregnancy, abortion, calving, and twinning of Holstein dairy cows subjected to artificial insemination at different times after synchronization were similar. These results also indicate that the timing of artificial insemination after synchronization did not influence calf gender ratio. Furthermore, pregnancy rates of Holstein dairy cows inseminated after synchronization were significantly influenced by postpartum time and parity number.en_US
dc.description.sponsorshipDIMESen_US
dc.description.sponsorshipThe authors thank the financial and in-kind support of DIMES. The authors thank Mr. Ali Riza Diren, Mr. Koray Suner, and their staff for the technical support.en_US
dc.identifier.doi10.1007/s11250-012-0231-0
dc.identifier.endpage416en_US
dc.identifier.issn0049-4747
dc.identifier.issn1573-7438
dc.identifier.issue2en_US
dc.identifier.pmid22820941
dc.identifier.scopus2-s2.0-84872825601
dc.identifier.scopusqualityQ2
dc.identifier.startpage411en_US
dc.identifier.urihttps://doi.org/10.1007/s11250-012-0231-0
dc.identifier.urihttps://hdl.handle.net/11468/14772
dc.identifier.volume45en_US
dc.identifier.wosWOS:000314046100008
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofTropical Animal Health and Production
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSynchronizationen_US
dc.subjectArtificial Insemination Timeen_US
dc.subjectPregnancy Rateen_US
dc.subjectCalf Gender Ratioen_US
dc.titleEffect of timing of artificial insemination after synchronization of ovulation on reproductive performance in Holstein dairy cowsen_US
dc.titleEffect of timing of artificial insemination after synchronization of ovulation on reproductive performance in Holstein dairy cows
dc.typeArticleen_US

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