Strategies for Using eFSH for Superovulating Mares

Folliculogenesis, embryo parameters and post-transfer recipient pregnancy rate following equine follicle-stimulating hormone (eFSH) treatment in cycling donor mares

“…Similar to the results obtained in the current study, we recently reported that embryos recovered after eFSH treatment in vernal transitional mares had, on average, a morphology grade that was significantly poorer than for embryos recovered from non‐superstimulated mares 38 . However, some other studies did not find significant alterations in embryo morphology grade following eFSH treatment as compared with controls 22,39 . Lower embryo morphology grade and a lower pregnancy rate following eFSH treatment could be influenced by the specific treatment protocol (e.g.…”

Hormonal Management for the Induction of Luteolysis and Ovulation in Andalusian Jennies: Effect on Reproductive Performance, Embryo Quality and Recovery Rate

“…Moreover, ITO was significantly higher in hCG-treated than in DES-treated jennies (62.61 ± 7.20 h vs. 48.79 ± 2.69 h), and the phenomenon of aged oocytes from persistent follicles is widely recognized [ 82 ]. The present study, and previous studies on mares [ 83 ] have demonstrated that EG is similar between ovulation-inducing treatments. Together, our findings could suggest that the administration of DES to donor jennies may result in a greater number of recovered embryos.…”