Advances in Vitrification Cryopreservation of Ovine GV Oocytes
Oocytes vitrification at germinal vesial(GV)stage has unrivaled advantages for freezing oo-cytes and long-term preservation of local livestock germplasm resources because they do not form the ex-tremely sensitive spindle,which have attracted researchers'wide attention.On the basis of it,this paper reviews the significance of oocyte vitrification cryopreservation of sheep at GV stage.It analyzes the prob-lems in current oocyte cryopreservation process of sheep at GV stage,and summarizes the effective solu-tions to improve the oocyte freezing efficiency.It provides reference for improving the efficiency of oocyte cryopreservation in the GV stage of sheep and goat.
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