Abstract:The experiment included 20 ewes of the Tsigai breed, allocated in two groups of 10 animals each. Inducing of oestrus synchronisation was performed during anoestral season (April -May) through vaginal sponges containing gestagens, and administration of Gravohormon (Vetbiopharm, Bulgaria) -500 UI in group 1 ewes and 1000 UI in group 2 ewes. Macromorphological study of the ovaries was carried out by means of laparoscopy after the adopted methods -on the 56 th hour, 72 nd hour and 5 th day following sponge withdrawal and injection of gonadotropin. The levels of the steroid hormones progesteron and 17ß-oestradiol were recorded in three ewes per each group at different times according to the experiment scheme. The histological structure of the ovaries was determined in seven animals subjected to ovariectomy.