Abstract

Suitable climatic condition found in tropical areas create wide spread of gastro-intestinal nematode of ruminants. The epidemiology of gastro-intestinal nematodes mainly depends on the climatic condition (temperature and humidity) of environment. Ethiopia is among the country with high occurrence of gastro-intestinal nematode infection in the region. According to different studies, the prevalence of nematodes in cattle ranges from 27-51% and 21.35%-96.7% in sheep and goat. The prevalence of Haemenchus contortus in sheep and goat ranges between 40% and 91.2%. Different studies indicated that; Agro-ecology, season, climate, host factor and management systems are the main factor for variation in prevalence across the country. The high prevalence of gastro-intestinal infection in the country have direct effect on livestock production causing mortality, decreasing growth rate and milk production, increasing treatment cost. Due to that effective control and preventive strategies should be required to tackle the devastating effect of the gastro-intestinal nematodes on livestock production.