Potential role for GnRH in the synchronization of follicular emergence before the superovulatory Day 0 protocol

The ability of GnRH to synchronize ovulation and new follicular wave emergence before a “superovulatory Day 0” protocol was assessed in Santa Inês ewes. For estrus synchronization, a 60-mg medroxyprogesterone acetate sponge was inserted for 6 d. One day before sponge removal, 37.5-μg d-cloprostenol and 300 IU eCG were injected intramuscularly (i.m.). After sponge removal, ewes were assigned to the following 3 groups: (1) GC—1-mL saline at 12 h (n = 10); (2) G24h—0.025-mg lecirelin (GnRH agonist) i.m.

Source: Domestic Animal Endocrinology - July 31, 2015 Category: Endocrinology Authors: M.F.A. Balaro, J.F. Fonseca, T.G.B. Barbosa, J.M.G. Souza-Fabjan, L.M. Figueira, T.A. Teixeira, L.R. Carvalheira, F.Z. Brandão Tags: Short Communication Source Type: research