Mycotic abortion is an important reproductive problem of cattle all over the world. It is caused by a number of different species of fungi and yeasts. These usually occur during the winter and spring months, since this is when cows are often kept in total confinement and can be exposed to moldy hay or silage. The epizootiology of the disease is not clearly understood but it is assumed that mouldy hay, straw and feeding stuffs are the most probable transmitting agents. The mold spores are thought to reach the placenta and fetus through the blood supply of the cow, although the way that they gain access to the circulatory system is not well understood. Mycotic abortion in cattle have been recorded usually after first 6 months of gestation. Aborted animals usually suffer from retention of placenta. Fungal abortions tend to occur sporadically although on some occasions a significant percentage (10–20%) of the pregnant animals in a herd may be affected. No treatment has yet been evolved for such abortions.

Keywords: Mycotic abortion; Bovine; Epizootiology; Fungal abortions.