It has been more than 10 years since the first calf was born following in vitro maturation of a
bovine oocyte. During that period, a number of modifications have been made to the culture
conditions during the maturation period but still most oocytes failed to produce viable
embryos. Recently, the pretreatment of donors leading to clear improvements in oocyte
developmental competence has been achieved. These treatments can be either 1) ovarian
stimulation with FSH followed by the slaughter of the animal and the incubation of ovaries …