Pathomorphological studies of lung lesions in sheep

Respiratory disorders are very common in sheep and often not easily detectable in the live animals until it is complicated. Thus examination of lungs at slaughter is the only way to understand pathology behind respiratory disorders and their prompt diagnosis. And thus this study was aimed at documenting various pathological conditions affecting the lungs of sheep. A total number of 903 sheep carcasses were examined, out of which, lung lesions were recorded in 203 cases (22.48 %). Pneumonia was recorded in 16.82% (152/903) cases, adenomatosis in 4.87% (44/903) cases and other lesions (atelectasis, emphysema and hemorrhages) in 0.78% (7/903) of cases. Based on duration of inflammation, involvement of tissue component and the principal constituent of the exudates, the lung lesions were further classified as acute bronchopneumonia (90/203 cases, 44.33%), sub-acute bronchopneumonia (28/203 cases, 13.79%), chronic bronchopneumonia (7/203 cases, 3.45%), acute interstitial pneumonia (16/203 cases, 7.88%), chronic interstitial pneumonia (6/203 cases, 2.96%), broncho-interstitial pneumonia (4/203 cases, 1.97%), embolic pneumonia (1/203 cases, 0.49%), adenomatosis (44/203 cases, 21.68%), atelectasis (3/203 cases, 1.48%), emphysema (1/203 cases, 0.49%) and hemorrhages (3/203 cases, 1.48%).