Abstract

A total of 315 sheep (6 month-5 years old) from different regions in Mosul were examined in order to study the clinical, hematological in sheep infected with gastrointestinal parasite, 170 sheep were found to be infected with gastrointestinal and lung worms 54% and 145 were clinically normal uninfected 46% which considered as a control group. Caprological examination revealed that sheep were infected with different types of worms represented with Marshallagia marshalli 62.9%, Ostertagia circumcincta 39.4%, Lung worms 25.9%, Trichostrongylus spp. 18.8%, Haemonchus contortus 18.2%, Nematodirus spp. 14.1%, Chabertia ovina 11.8%, Paramphistomum cervie 8.2%, Moniezia spp. 6.5%, Strongyloides papillosus 4.1%, Toxocara vitulorum 2.4%, Cooperia spp., Trichuris spp., Oesophagostomum spp. 1.8%, Bunostomum trigonocephalum 1.2%, and Gongylonema spp. 1.2% which was recorded for the first time in Mosul Haemonchus contortus was the most sever infected at a mean of (1366) egg/gm of feces, it was shown the mixed infection is higher than single infection. Result indicated that infected sheep manifested clinical signs of emaciation and failure to gain weight, pale mucous membrane, easily wool detachment, moderate to watery diarrhea, dehydration, partial or complete loss of appetite, depression, coughing with nasal discharge, bottle jaw, cardiac and respiratory changes included strong heart beats and moist rales in lungs, and bloody, mucoid feces. Examination of the heart revealed significant increase in the means heart beats when compared with control group, while there were no significant changes in body temperature and respiratory rates among the two groups. Significant decrease were encountered in the RBCs, Hb, PCV and platelets values of infected sheep, and Significant increase encountered in (ESR), While there was significant increase in WBCs and eosinophil counts.