STUDIES ON INCIDENCE AND ETIOPATHOLOGY OF PULMONARY AFFECTIONS IN SLAUGHTERED SHEEP
Loading...
Date
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
AAU, Anand
Abstract
The present study was carried out to find out the incidence of pulmonary lesions in slaughtered sheep with pathomorphological study of various pulmonary lesions, primary isolation of bacterial agents and their antibiotic .sensitivity pattern. A total of 1000 sheep slaughtered at local slaughterhouse of Anand located in Anand District of Central Gujarat were examined for pulnumary lesions. Out of total sheep examined at slaughter, 94 (9.4%) sheep showed grossly appreciable pulmonary lesions. The distribution of pulmonary lesions, revealed involvement of both lungs in 53.19% sheep were as right lung were affected in 31.91% and left in 14.89% cases. Among the different lobes, apical lobes were affected in 65.95% sheep followed by diaphragmatic (51.06%). middle (26.59%) and accessory lobe (29.78 %). The different pulmonary affections on the basis of appreciable gross lesions, included pneumonia alone in 5.5% sheep followed by pulmonar\ haemorrhages (1.4%). pulmonary emphysema (1.2%). pulmonary oedema (0.6%) and pulmonary cyst (0.7%). Out of 55 cases of pneumonia, broncho-pneumonia alone was accounted for 46.80 per cent cases whereas; interstitial pneumonia was seen in 11.70 per cent cases. Bronchopneumonia was further classified into acute (37.23%) and sub acute (9.57 %) bronchopneumonia. Acute bronchopneumonia comprised of 22 (23.40%) case of suppurative and 13(13.82%) cases fibrinous pneumonia. Bronchopneumonia, in general, grossly characterized by varying degree of cranio-ventral consolidation with red hepatization especially of apical and middle lobes. Microscopic picture characterized by accumulation of pink stained exudates in alveoli and marked infiltration of inflammatory cells with congestion of alveolar capillary. Interstitial pneumonia was observed in 11.70 per cent cases, Lung with Interstitial pneumonia were grossly shrunken, red or pale grey in colour with elastic and rubbery texture microscopically, the lesions were characterized by thickening of interaveolar septa due to infiltration of mononuclear cells along with proliferation of fibroblasts. Primary isolation of bacterial agents from 50 pneumonic lungs revealed 43 (83%)) samples culturally positive for various bacterial isolates, which comprised 1 5 (34.88%) Staphylococcus. 12 (27.90%) Escherichia coli. 08 (18.60%)) Pseiuloimmas. 06 (13.95%)) proteus and 02 (4.65%)) Slreplococciis. The enrofloxacin was found to be highly sensitive to various bacterial isolates (86.04) followed by geniamicin (81.39). chloramphenicol (76.74). tetracycline (60.46). amoxicillin (58.13). cotrimoxazole (55.81). cephalaxin (39.53).and erythromycin (34.88).
Description
Keywords
VETERINARY PATHOLOGY, A STUDY