Study onthe prevalence of pulmonary lesions of slaughtered sheep at Urmia abattoir

In regard to importance of various pathologic factors affecting respiratory system and its role in the selection of specific therapies in the sheep, 626 slaughtered sheep were examined to describe the pathological lesions of lower respiratory tract at Urmia abattoir. A total of 114/626 lungs (18.12%) with macroscopic lesions were condemned and macro-microscopically examined. The specimens were processed through routine method for paraffin embedded sectioning (5-7micron) and stained by Hematoxillin& Eosin method. Incidence of lesions in order of frequency were interstitial pneumonia (51; 8.14%),verminous pneumonia(23;3.67%), atelectasis (22; 3.51%), granulomatous pneumonia (22;3.51%), chronic bronchitis (21; 3.35%), fibrosis (13;2.07%), adenocarcinomas (11;1.75%),chronic bronchiolitis (10;1.59%), hydatic cyst (8;1.27 %), pulmonary abscesses (7;1.11%), emphysema (6;0.95%), pleuritis (2;0.31%) and pulmonary edema (2;0.319%). The result of this study showed that interstitial pneumonia was interestingly predominant among other lesions of condemned lungs which may reflect a seasonal difference.