Publications by authors named "Gizem Guven-Ates"
Background: maturation (IVM) of germinal vesicle intact oocytes prior to fertilization (IVF) is practiced widely in animals. In human assisted reproduction it is generally reserved for fertility preservation or where ovarian stimulation is contraindicated. Standard practice incorporates complex proteins (CP), in the form of serum and/or albumin, into IVM media to mimic the ovarian follicle environment.
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- The study focuses on in vitro production (IVP) of cattle embryos, emphasizing the need for oocyte maturation prior to fertilization and the effects of ovarian stimulation and progesterone (P4) support during oocyte retrieval (OPU).
- Two experiments were conducted involving 10 Holstein heifers to assess the impact of P4 via corpus luteum presence or intravaginal devices (CIDR® and PRID®) on blastocyst yields across multiple OPU cycles.
- Results showed that higher peripheral P4 levels were associated with the PRID® Delta device, and the interaction between CL presence and P4 device influenced blastocyst yield, particularly in cycles without a CL.