Articles | Volume 68, issue 1
https://doi.org/10.5194/aab-68-101-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/aab-68-101-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Effect on OPU/IVEP success of different applications for synchronizing follicular waves prior to superstimulation in holstein heifers
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Selçuk University, Konya, Türkiye
Ömer Faruk Yeşilkaya
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Selçuk University, Konya, Türkiye
Sakine Ülküm Çizmeci
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Selçuk University, Konya, Türkiye
Maide Gölbaşı
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Muğla Sıtkı Kocman University, Muğla, Türkiye
Ayşe Sarı
Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Necmettin Erbakan University, Konya, Türkiye
Dursun Ali Dinç
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Selçuk University, Konya, Türkiye
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This study investigated the impact of continuous heat stress and nighttime recovery on the yield of oocytes and the production of embryos in Holstein heifers. Oocyte collection sessions in the same herd under identical care and feeding were categorized using the day’s peak and average heat–humidity load. It was observed that nighttime recovery had a positive effect on oocyte and blastocyst yield. This suggests that nighttime temperatures should be considered when evaluating heat stress.
Kübra Karakaş Alkan, Fatma Satılmış, Yunus Emre Deniz, Mustafa Bodu, Muhammed Furkan Çiftçi, Ömer Faruk Yeşilkaya, and Hasan Alkan
Arch. Anim. Breed., 68, 555–564, https://doi.org/10.5194/aab-68-555-2025, https://doi.org/10.5194/aab-68-555-2025, 2025
Short summary
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Prostaglandins have a detrimental effect on embryo development during the early phase of in vitro culture. In this study, non-steroidal anti-inflammatory drugs (NSAIDs) were supplemented in the in vitro culture medium to eliminate the negative effect of prostaglandins during in vitro embryo culture, and the effect of these NSAIDs on embryo development and quality was evaluated. Embryos were assessed on day 7 based on developmental stage, quality, apoptotic index, and developmental competence.
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Short summary
In this study, short synchronization methods that do not contain estradiol before superstimulation in ovum pickup (OPU) applications were investigated. The gonadotropin-releasing hormone (GnRH), human chorionic gonadotropin (hCG), and dominant follicle removal (DFR) were used for follicular wave emergence. It was determined that DFR and hCG for follicular wave emergence increased oocyte yield and in vitro embryo production success in pre-superstimulation synchronization protocols.
In this study, short synchronization methods that do not contain estradiol before...