Ethiopia. situated in the Ilorn of Africa. shows widernvariation in topography climate and land use distribution.rnIt has a high population of livestock. However. the prevalencernof a number of important diseases has impeded the rationalrnexploitation of this resource.rnIn recent years a nation-wide survey of livestock diseasesrnis being conducted to identify, map infected areas and suggestrnappropriate measures amongst which parasitic diseases arerngiven considerable attention. Accordingly, an investigationrnof the seasonal incidence of ovine helminthiasis in selectedrnsites of various ecological zones was carried out for a periodrnof one year to provide baseline information.rnThus, the local occurrence of the Helminth of the generarnof I~asic Paramphistomum, ~unostomllm., Chahert.ia, Dictyoc~.rnI:'.!.us, l1aemon. Trichostr