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Abstract
Ruminants are the most important animals raised and used for meat, milk and leather production and considered the main source of animal protein in Egypt.The digestion in ruminants is microbial digestion which results in essential amino acids and essential fatty acids synthesis which can not be synthesized in human beings so the human beings depends on it as asource of essential amino acids and essential fatty acids. The gradual increase in the human population with the increased consumption of animal proteins in front of the limited abilities of animal production required more research interest in the problem concerning the capacity of the animal to produce. Among livestock, cattle, buffaloes, sheep, goat and camels are considered the main sources of the national income in Egypt and multipurposes animals producing milk, meat, hide, wool. Moreover, their manure used as soil fertilizers and some of them used for work in field as ploughing and irrigation of the fields by cattle and buffaloes.Gastrointestinal parasite infection are a world wide problem for both small and large scale farmers but their impact is greater in sub-Saharan Africa in general and Egypt due to the availability of a wide range of agro-ecological factors suitable for diversified hosts and parasite species. The most destructive enemies of our animal wealth and the biggest hinderness for successful production are parasitic infection where, its percentage in the Egyptian field animals fluctuated according to many factors including irrigation, season, frequency of exposure of animal to infection, immune condition of the animal, the geographic location and
climatic conditions (Cawthorne, 1984).