الفهرس 
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Abstract
A total of 106 cattle egrets (Bubulcus ibis) were examined and 20 parasites were detected which are 5 species of trematodes, 8 species of nematodes, 2 species of protozoa, and 5 species of ectoparasites ; two lice, one tick larvae, one flee and one dipteran fly. The detected trematodes were Apharyngostrigea ibis (46.22%), Nephrostomum ramosum (43.39%), Apatemon gracilis (33.01%), Apharyngostrigea magna (20.75%) and Paratanasia sp. (16.03%). The detected nematodes were Desportesius invaginatus (85.84%), Microtetrameres spiralis (67.92), Porrocaecum sp. (26.41%), Microtetrameres helix (23.58%), Tetrameres sp. (10.37%), Microfilaria (2.83%), Gnathostoma sp. larvae (1.88%) and Anisakis sp. larvae (0.94 %). The detected protozoa were Cryptosporidium sp. (18.86%) and Leucocytozoon sp. (4.71%). The detected ectoparasites were lice Ciconiphilus decimfasciatus (67.92%) and Menopon gallinae (45.28), tick Argas persicus larvae (11.32), fly Pseudolynchia sp. (9.43%) and flea Ctenocephalides canis (1.88 %). The pathological effect of theses parasites and five factors affecting the prevalence of parasites in cattle egrets; habitat, area of collection, sex, age and season were studied.