The synchronisation of oestrus in sheep. 1. Dosage and time of prostaglandin administration following progestagen pretreatment
In order to overcome the refractory period of the ovary to c1oprostenol (ICI 80996) treatment (prior to day 4 and subsequent to day 14 of the oestrous cycle), ewes were treated with intravaginal progestagen sponges for eight days and injected…