Regardless of the essential role of copper (Cu) in the physiological regulation process of
mammalian reproduction, excessive exposure to Cu triggers the meiotic defects of porcine …

In vivo-matured cumulus–oocyte complexes are valuable models in which to assess
potential biomarkers of rabbit oocyte quality that contribute to enhanced IVM systems. In the …

Cryopreservation impairs oocyte quality, which may be associated with abnormal gene
expression. Currently, alteration of mRNA levels in vitrified porcine oocytes has not been …

The developmental competence of in vitro maturation (IVM) oocytes can be enhanced by
antioxidant agents. The present study investigated, for the first time in the rabbit model, the …

Simple Summary In vitro production (IVP) of embryos is an essential element of many
reproductive biotechnologies. Although some remarkable achievements have been …

Traditionally, in vitro oocyte and embryo culture progresses through a series of varying
culture medium. To investigate simplifying the in vitro production of bovine cumulus–oocyte …

The preservation of ovaries beyond 7 h dramatically decreases the developmental potential
of oocytes to reach the blastocyst stage during in vitro embryo production. Here we …

High fertility and early puberty in Bos indicus heifers are desirable and genetically correlated
traits in beef production. The hypothalamus–pituitary–ovarian (HPO) axis synthesizes …

Polyspermia is an adverse phenomenon during mammalian fertilization when more than
one sperm fuses with a single oocyte. The egg cell is prepared to prevent polyspermia by …

Proper oocyte maturation in mammals produces an oocyte capable of monospermic
fertilization and embryo preimplantation. The cumulus-oocyte complexes (COCs) …