Abstract
The Neospora caninum parasite causes abortion in cattle in virtually all parts of the world with enormous economic consequences. The purpose of this study was to determine the seroprevalence of antibodies of Neospora caninum in dairy cattle in Lorestan Province, west of Iran. A total of 347 dairy cows were randomly selected. The serum of each case was analyzed for the possibility of the presence of antibody against N. caninum antigen, using the commercial kit: ELISA. The results of the ELISA test indicated that from 347 dairy cattle examined, the antibodies to N. caninum were found in 34 (9.8%). The percentage of seropositive aborted cattle was 13.33%. This study also indicated that there was no significant relationship between seropositivity and such factors as the age, breed, and abortion history of the cattle. Moreover, no significant relationship between seroprevalence of infection among rural and industrial cows was found. The neosporosis could be one of the possible causes of abortion in cattle. Further studies are recommended to determine the relationship between this parasite and the occurrence of abortion in cattle in the province of Lorestan.
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