Ovarian Cyst in Crossbred Cattle of Temperate Region- A Retrospective Study of 54 Cases

Abstract

The present study was conducted with an objective to extract all possible interrelated etiological factors of cystic ovary and to evaluate the best treatment protocol in dairy cattle under field condition of temperate region. A total of 54 cattle (47 cows and 7 heifers), suffering from ovarian cyst were retrospectively used to study prevalence and outcome of the disease over a period of 5 years. Highest prevalence was recorded in crossbred Jersey, in 2^nd lactation and during summer. Major clinical signs showed by the animals with ovarian cysts (OC) were either repeat breeding or anestrus. In case of repeat breeding, irregular cycle (sometimes short and sometimes long in the same cow) in 23.33% (7/30), nymphomania in 13.33% (4/30), short cycle (10-15 days) in 23.33% (7/30) and long cycle (23-30 days) in 10% (3/30) cases were noticed. In remaining 30% cases (9/30) normal cycles were noticed. Right ovary affected more than left one and mean number of cysts recorded were 1.17 per animal. Follicular cysts could be treated with GnRH in 75% (9/12) cases, and, luteal cysts with cloprostenol in 83.33% (10/12) cases. However, in cases where cyst could not be differentiated by rectal palpation, administration of cloprostenol 9 days after HCG treatment was found 66.67% (8/12) effective in curing the disease. It is concluded that both follicular and luteal cysts can be treated successfully with GnRH/hCG and prostaglandin or its analogue, respectively.