However, hCG is still a commonly used treatment for ovarian cysts. Table 1 lists the treatments for follicular and luteinized follicular cysts and describes the expected outcome after treatment. Because a high proportion of cysts spontaneously regress during the early postpar tum period, treatments are usually not administered until after 30 days postpartum. The GnRH treatment causes luteinization of the cyst, and the subsequent prostaglandin treatment of the luteinized cyst causes regression of that structure. Ovarian cysts reduce reproductive efficiency in most dairy herds.
Rectal palpation is the only practical method to detect ovarian cysts.
The exact cause of ovarian cysts is unknown. Culling cows and heifers that have had ovarian cysts can permanently decrease the incidence of ovarian cysts in most dairy herds. An injection of GnRH is an effective treatment for ovarian cysts. Issued in furtherance of the acts of May 8 and June 30, 1914.