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Updated: Aug 26, 2026

Vitrification of In Vitro Matured Oocytes Collected from Adult and Prepubertal Ovaries in Sheep
Published on: July 10, 2021
Cryopreservation of bovine oocytes: current status and recent developments
1Université catholique de Louvain, Institut des Sciences de la Vie, Unité des Sciences vétérinaires, Place Croix du Sud 5 Bte 10, 1348 Louvain-la-Neuve, Belgium.
Abstract:
The cryopreservation of oocytes of most animal species remains a challenge due to their complex structure. Equilibrium freezing is not satisfactory because oocytes seem to be damaged by exposure for several minutes to temperatures near 0 degrees C. Therefore, cryopreservation of oocytes by vitrification--especially the use of very high cooling rates of oocytes suspended in extremely small volumes of various cryoprotective additive modifications--seems the most appropriate method.

