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Study of pathological changes in digestive system of domestic pigeons (Columba livia) in Mosul city

Author(s): M. G. Saeed | A. A. Al-Nimma

Journal: Iraqi Journal of Veterinary Sciences
ISSN 1607-3894

Volume: 24 (Arabic);
Issue: 2;
Start page: 115;
Date: 2010;
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One hundred diseased cases of pigeons (Columba livia) in Mosul city were examined, 67 birds (67%) showed pathologicallesions in digestive system. Most of the gross and histopathological lesions occurred in intestine (29.3%) followed byoropharynx, liver, esophagus, crop, proventriculus, and pancreas the values (20.8%, 16.6%, 12.5%, 10.4%, 6.2%, 4.2%)respectively. Gross lesions of intestine showed severe tape worms infestation with petechial hemorrhage in some cases,histopathologically there were catarrhal enteritis, necrotic and hemorrhagic enteritis were less, and desquamation of mucosawith bacterial colonies. Gross lesions of oropharynx, esophagus and crop in most cases were yellow caseated masses ornecrotic material. In some cases white diphtheritic membrane with thickening of mucosa in esophagus, crop and proventriculuswere founded, petichial hemorrhage on the mucosa of proventriculus were less some cases. Histopathological lesions oforopharynx and esophagus were thickening of mucosa and presence of necrotic caseated foci on the submucosa. In crop therewere epithelial hyperplasia and in some cases infiltration of inflammatory cells with cocobacilli bacteria and desquamation ofepithelial cells were founded. In proventriculus desquamation and necrosis of epithelial cells of mucus glands with infiltrationof inflammatory cells. Gross lesions in liver and pancreas were limited represented by enlargement and congestion, histopathologically coagulative necrosis of hepatic cells with cocobacilli bacteria, pancreas showed two types of inflammationone was non-suppurative and another was suppurative.
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