Influence of reproductive status on in vitro oocyte maturation in dogs

摘要

In the bitch, oocytes need 48-72 h to complete post-ovulatory maturation to the metaphase 11 stage in the isthmus of the oviduct, an interval similar to that found in in vitro studies. The effect of estrous cycle stage on in vitro meiotic competence of dog oocytes has been described in several studies. However, there are no reports evaluating the possible effects of pyometra or pregnancy on subsequent potential of oocytes recovered from such females to undergo in vitro maturation.