Improving conception rate in lactating dairy cows by using modified ovsynch protocol during summer

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dc.contributor.authorTasdemir, Umut
dc.contributor.authorAlkan, Ali
dc.contributor.authorOkut, Hayrettin
dc.contributor.buuauthorMecitoglu, Gulnaz Yılmazbas
dc.contributor.buuauthorGumen, Ahmet
dc.contributor.buuauthorKeskın, Abdulkadir
dc.contributor.buuauthorKarakaya, Ebru
dc.contributor.departmentUludağ Üniversitesi/Veteriner Fakültesi.tr_TR
dc.date.accessioned2021-03-16T07:17:37Z
dc.date.available2021-03-16T07:17:37Z
dc.date.issued2012-01-24
dc.description.abstractThe aim of this study was to test two different timed artificial insemination (AI) protocols in order to improve the percentage of pregnant cows per AI in lactating dairy cows during the summer. Cows (n=140) were randomly divided into two groups; cows in the OVS group (n=75) received the Ovsynch protocol (GnRH–7d–PGF2α–2d–GnRH–16h–AI), and cows in the MOVS group (n=65) received the Ovsynch protocol with exogenous progesterone (P4) which administrated between GnRH and PGF2α. In addition, GnRH was injected 7 d after AI in the MOVS group (GnRH–P4–7d –PGF2α–2d–GnRH–16h–AI–7d–GnRH). Response to the second GnRH treatment of Ovsynch (GnRH-2) was greater (P<0.03) in the MOVS (98.5%) than the OVS (89.3%) group. Although P/AI at 31 d was numerically greater in the MOVS (46.2%, 30/65) than the OVS (37.3%, 28/75) group, this difference was statistically insignificant. Thus, because of the greater response to GnRH-2 and P/AI in MOVS compared with the OVS group, the MOVS protocol can be used to improve P/AI in lactating dairy cows during the summer, but further studies are needed to be evaluated the effects of the MOVS protocol on P/AI during the summer.en_US
dc.description.abstractThe aim of this study was to test two different timed artificial insemination (AI) protocols in order to improve the percentage of pregnant cows per AI in lactating dairy cows during the summer. Cows (n=140) were randomly divided into two groups; cows in the OVS group (n=75) received the Ovsynch protocol (GnRH–7d–PGF2α–2d–GnRH–16h–AI), and cows in the MOVS group (n=65) received the Ovsynch protocol with exogenous progesterone (P4) which administrated between GnRH and PGF2α. In addition, GnRH was injected 7 d after AI in the MOVS group (GnRH–P4–7d –PGF2α–2d–GnRH–16h–AI–7d–GnRH). Response to the second GnRH treatment of Ovsynch (GnRH-2) was greater (P<0.03) in the MOVS (98.5%) than the OVS (89.3%) group. Although P/AI at 31 d was numerically greater in the MOVS (46.2%, 30/65) than the OVS (37.3%, 28/75) group, this difference was statistically insignificant. Thus, because of the greater response to GnRH-2 and P/AI in MOVS compared with the OVS group, the MOVS protocol can be used to improve P/AI in lactating dairy cows during the summer, but further studies are needed to be evaluated the effects of the MOVS protocol on P/AI during the summer.en_US
dc.identifier.citationMecitoglu, G. Y. vd. (2012). "Improving conception rate in lactating dairy cows by using modified ovsynch protocol during summer". Journal of Biological and Environmental Sciences, 6(18), 207-212.tr_TR
dc.identifier.endpage212tr_TR
dc.identifier.issn1307-9530
dc.identifier.issn1308-2019
dc.identifier.issue18tr_TR
dc.identifier.startpage207tr_TR
dc.identifier.urihttps://dergipark.org.tr/tr/download/article-file/497492
dc.identifier.urihttp://hdl.handle.net/11452/17750
dc.identifier.volume6tr_TR
dc.language.isoenen_US
dc.publisherUludağ Üniversitesitr_TR
dc.relation.collaborationYurt içitr_TR
dc.relation.collaborationSanayitr_TR
dc.relation.journalJournal of Biological and Environmental Sciencestr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergitr_TR
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCowen_US
dc.subjectOvsynchen_US
dc.subjectSummeren_US
dc.subjectPregnancyen_US
dc.subjectSığırtr_TR
dc.subjectYaz dönemitr_TR
dc.subjectGebeliktr_TR
dc.titleImproving conception rate in lactating dairy cows by using modified ovsynch protocol during summeren_US
dc.title.alternativeSağmal süt sığırlarında yaz döneminde modifiye ovsynch protokolü ile gebelik oranının arttırılmasıtr_TR
dc.typeArticleen_US

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2012 Cilt 6 Sayı 18