Bacterialogical study of Abortion in Ewes in Hamedan province

Abortion is considered as an important factor for economic losses in flocks of sheep and goats, cause by many different infectious agents. The most common cause of infectious abortion in domestic animals are bacteria. In this cross sectional study, the prevalence of bacterial agents in 226 cases of abortion in sheep and goats in the Hamedan province were studied. Bacterial agent were isolated as from 61 sample(26.99%), including 12 sample brucella(5.3%), 1 sample campylobacter(0.44%), 37 sample E.coli(16.93%) and 11 sample other bacteria(4.87%). According to the results, bacterial agents with focus an brucella, have low role of abortion in the examinated cases. So, evaluation of viral and parasitic agents of abortionin sheep and goat (for example blue tongue disease &Toxoplasmosis) is necessary for determining their role in this issue. On the other hand, managment control of abortion is an important step in reducing the cases.