| dc.description.abstract | The important feature of the present study was investigated the pneumonic lungs of sheep
and their pathological conditions after slaughtered in different slaughter houses/places of
Sylhet city another things isolation and identification of causal agents, antibiotic sensitivity
test of were commonly used antibiotics in veterinary practices in our country. During the
period from January to June 2016, a total of 300 lungs of slaughtered sheep were examined
individually and out of which 80 (15.0%) become affected and lungs were collected for
histopathology and bacterial isolation respectively. The gross examination of lungs showed
that 40% (120 out of 300 lungs examined) were found positive for pneumonic sheep lungs.
The lesions were categorized into (a) hemorrhages 40% (b) congesion 26% (c) hemorrhage
with congestion 20% (d) fibrosis of lungs 7% and (e) hepatization in lungs 7%. In
histopathological examination, lesions were categorized into (a) bronchopneumonia 26%
(acute catarrhal bronchopneumonia 18% and purulent bronchopneumonia 8%), (b) interstitial
pneumonia 20%, (c) broncho-interstisial pneumonia 25%, (d) fibrinous pneumonia 22% (e)
verminous pneumonia 7%. The highest prevalence of pneumonic lungs was found in
bronchopneumonia (26%) and then bronchointerstitial pneumonia (25%) and fibrinous
pneumonia (22%).
The organisms isolated from the affected lungs were E. coli. (20%), Staphylococcus sp.
(25%), Streptococcus sp. 15%, Salmonella sp. 15%, Pasteurella sp. 25%. Finally antibiotics
sensitivity test was performed on isolated bacteria. The isolates of Streptococcus sp. and
Staphylococcus sp. were highly sensitive to Erythromycin, Ceftriaxone, Nalidixic acid,
Penicillin, Chloramphenicol and Gentamycin. On the other hand, antibiotic sensitivity pattern
of isolated Escherichia coli and Salmonella sp. were highly sensitive to erythromycin,
ceftriaxone, Cefalexine, Nalidixic acid, Gentamycin. The Pasteurella sp. were highly
sensitive to Nalidixic acid, Erythromycin, Co-Trimoxazole, Gentamycin, Ceftriaxone,
Chloramphenicol & resistant to Penicillin, Ampicillin and Bacitracin. In consideration of the
most effective antimicrobial agents against all the tested isolates, Gentamycin, Ceftriaxone,
Erythromycin and Nalidixic acid are the drugs of choice for the treatment of pneumonic
sheep | en_US |
