Publication:
Effect of presynchronization strategy before ovsynch on fertility at first service in lactating dairy cows

dc.contributor.authorAlkan, Ali
dc.contributor.authorOkut, Hayrettin
dc.contributor.authorWiltbank, Milo Charles
dc.contributor.buuauthorGümen, Ahmet
dc.contributor.buuauthorKeskin, Abdülkadir
dc.contributor.buuauthorYılmazbaş, Gülnaz Mecitoğlu
dc.contributor.buuauthorKarakaya, Ebru
dc.contributor.departmentVeteriner Fakültesi
dc.contributor.departmentJinekoloji ve Doğum Ana Bilim Dalı
dc.contributor.orcid0000-0003-2817-3221
dc.contributor.researcheridAAH-1406-2021
dc.contributor.researcheridAAG-4440-2019
dc.contributor.researcheridAAH-3831-2021
dc.contributor.scopusid6602393069
dc.contributor.scopusid24473229800
dc.contributor.scopusid36457964000
dc.contributor.scopusid36457784500
dc.date.accessioned2021-12-10T11:37:36Z
dc.date.available2021-12-10T11:37:36Z
dc.date.issued2012-11
dc.description.abstractThe aim of this study was to evaluate the effect of presynchronization with or without the detection of estrus on first service pregnancy per artificial insemination (P/AI) and on Ovsynch outcome in lactating dairy cows. A total of 511 cows were divided randomly but unevenly into 3 treatment groups at 44 to 50 days in milk (DIM). Ovsynch was started at the same time (69 to 75 DIM) in all three groups. Cows in the Ovsynch group (CON, N = 126) received no presynchronization before Ovsynch, and all cows were bred by timed AT (TAI). Cows in the presynchronization with estrus detection (PED) and the presynchronization with only TAI (PTAI) groups received two doses of prostaglandin F-2 alpha (PGF) 14 days apart, starting at 44 to 50 DIM. Ovsynch was initiated 11 days after the second PGF treatment. Cows in the PED group (N = 267) received AI if estrus was detected after either PGF injection. Cows that were not determined to be in estrus after PGF injection received Ovsynch and TAI. Cows in the PTAI group (N = 118) were not inseminated to estrus, with all cows receiving TAI after Ovsynch. The ovulatory response to the first GnRH injection administered as part of Ovsynch differed (P = 0.002) among treatment groups (83.1% in PTAI, 72.6% in PED, and 62.7% in CON). However, the ovulatory response to the second injection of GnRH during Ovsynch did not differ among treatment groups. Of the 267 PED cows, a total of 132 (49.4%) exhibited estrus and were inseminated. The P/AI at the 31-day pregnancy diagnosis was similar between the cows in the PED group with AI after estrus detection (37.9%; 50/132) and those bred with TAI (34.1%; 46/135). The P/AI in the CON group (46.8%; 59/126) was greater (P < 0.05) than that in the PED group (36.0%; 96/267). In addition, the P/AI in the CON group was greater (P = 0.04) than that in the PED cows receiving TAI (34.1%; 46/135) but less than that in the PED cows bred to estrus (37.9%; 50/132) (P = 0.16). At the 31-day pregnancy diagnosis, the cows in the PTAI group had greater P/AI (55.9%; 66/118) than both those in the PED group (P < 0.01; either estrus or TAI) and those in the CON group (P = 0.08). Thus, presynchronization with PGF (PTAI) increased the ovulatory response to Ovsynch and improved P/AI in dairy cows. Interestingly, the breeding of cows to estrus during presynchronization reduced fertility to the TAI and overall fertility, including cows bred to estrus and TAI. These results indicate that maximal fertility is obtained when all cows receive TAI after the presynchronization protocol.
dc.identifier.citationGümen, A. vd. (2012). "Effect of presynchronization strategy before ovsynch on fertility at first service in lactating dairy cows". Theriogenology, 78(8), 1830-1838.
dc.identifier.endpage1838
dc.identifier.issn0093-691X
dc.identifier.issn1879-3231
dc.identifier.issue8
dc.identifier.pubmed22968033
dc.identifier.scopus2-s2.0-84867403445
dc.identifier.startpage1830
dc.identifier.urihttps://doi.org/10.1016/j.theriogenology.2012.07.021
dc.identifier.urihttps://pubmed.ncbi.nlm.nih.gov/22968033/
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0093691X12004359
dc.identifier.urihttp://hdl.handle.net/11452/23170
dc.identifier.volume78
dc.identifier.wos000310388200019
dc.indexed.wosSCIE
dc.language.isoen
dc.publisherElsevier Science
dc.relation.bapYDP 2009/3
dc.relation.collaborationSanayi
dc.relation.collaborationYurt dışı
dc.relation.collaborationYurt içi
dc.relation.journalTheriogenology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectReproductive biology
dc.subjectVeterinary sciences
dc.subjectDairy cow
dc.subjectPresynchronization
dc.subjectOvsynch
dc.subjectTimed artificial-insemination
dc.subjectOvulatory follicle
dc.subjectPregnancy rate
dc.subjectReproductive-performance
dc.subjectSynchronized estrus
dc.subjectImproves fertility
dc.subjectEstrous-cycle
dc.subjectHolstein cows
dc.subjectProtocol
dc.subjectSize
dc.subjectBos
dc.subject.emtreeGonadorelin
dc.subject.emtreeProstaglandin F2 alpha
dc.subject.emtreeAnimal
dc.subject.emtreeAnimal disease
dc.subject.emtreeArticle
dc.subject.emtreeArtificial insemination
dc.subject.emtreeBreeding
dc.subject.emtreeCattle
dc.subject.emtreeEstrus
dc.subject.emtreeEstrus cycle
dc.subject.emtreeFemale
dc.subject.emtreeFertility
dc.subject.emtreeLactation
dc.subject.emtreeMethodology
dc.subject.emtreeOvulation induction
dc.subject.emtreePhysiology
dc.subject.emtreePregnancy
dc.subject.emtreeTime
dc.subject.emtreeTreatment outcome
dc.subject.meshAnimals
dc.subject.meshBreeding
dc.subject.meshCattle
dc.subject.meshDinoprost
dc.subject.meshEstrus detection
dc.subject.meshEstrus synchronization
dc.subject.meshFemale
dc.subject.meshFertility
dc.subject.meshGonadotropin-releasing hormone
dc.subject.meshInsemination, artificial
dc.subject.meshLactation
dc.subject.meshOvulation induction
dc.subject.meshPregnancy
dc.subject.meshTime factors
dc.subject.meshTreatment outcome
dc.subject.scopusArtificial Insemination; Estrus; Estrus Synchronization
dc.subject.wosReproductive biology
dc.subject.wosVeterinary sciences
dc.titleEffect of presynchronization strategy before ovsynch on fertility at first service in lactating dairy cows
dc.typeArticle
dc.wos.quartileQ3 (Reproductive biology)
dc.wos.quartileQ1 (Veterinary sciences)
dspace.entity.typePublication
local.contributor.departmentVeteriner Fakültesi/Jinekoloji ve Doğum Ana Bilim Dalı
local.indexed.atScopus
local.indexed.atWOS

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