1. Utilization of Assisted Reproductive Technologies in Breeding Auliekol Cattle: A Comparative Study.
- Author
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Kulpiisova A, Yessengaliyev K, Kassimova G, Kozhakhmetova A, Kadraliyeva B, Rustem A, Temirzhanova A, Burambayeva N, Chylbak-Ool S, Pakhomova E, Abekeshev N, Baikadamova G, Kemeshev Z, Tegza A, Issimov A, and White P
- Abstract
This study evaluates the utilization of in vitro embryo production (IVEP) technology for the conservation and breeding of the Auliekol cattle breed, a primary beef breed in Kazakhstan facing population decline due to the cessation of breeding programs and the incursion of transboundary diseases. We assessed the effect of consecutive ovum pick-up (OPU) procedures on oocyte yield and embryo production in Auliekol and Aberdeen Angus cows. A total of 2232 and 3659 oocytes were aspirated from Auliekol and Aberdeen Angus donors, respectively, with significantly higher yields and embryo production observed in Aberdeen Angus cows. The application of a meiotic block using Butyrolactone I (BLI) and subsequent in vitro fertilization (IVF) protocols was employed, with embryo development monitored up to the morula/blastocyst stage. Results indicated that Auliekol cows exhibited lower oocyte recovery, cleavage, and blastocyst rates compared to Aberdeen Angus cows, likely due to genetic characteristics. Despite the challenges, IVEP presents a valuable tool for the preservation and future propagation of the Auliekol breed, highlighting the need for further research to enhance reproductive outcomes and conservation strategies.
- Published
- 2024
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