Vol. 12, Special Issue 7 (2023)

Author(s):
Indu Bala, Goverdhan Singh, Kamal Purohit, Bhavana Kanwar Rathor and Divya Darnga

Abstract:
The present study was conducted on 72 cattle of different age groups, sex and breeds to find out the occurrence of various pathological conditions of lower respiratory tract, and gross and histopathological alteration with reference to the type, pattern and morphology. Out of these 72 specimens, 51 samples of respiratory system suspected for abnormalities were further processed for histopathological examination. An overall incidence of various pathological conditions was seen as 70.83%. The various forms of affections were identified as pulmonary congestion and oedema (17.65%), pulmonary emphysema (13.73%), atelectasis (11.76%), interstitial pneumonia (17.65%), suppurative pneumonia (5.88%), broncho-pneumonia (13.73%), fibrinous pneumonia (5.88%), haemorrhagic pneumonia (7.84%), pleuropneumonia (1.96%) and pulmonary hydatidosis (3.92%). Sample collected for microbiological examination revealed the presence of different types of bacteria. Bacteria isolated were E. coli (18 samples), Pseudomonas (7 samples), Klebsiella (4 samples) and S. aureus (11 samples). It was observed that E. coli isolates belonged to different serotypes viz. O11 (20%), O26 (40%), O83 (10%), O121 (20%) and O (untypable) 10%. Antibiogram patterns of different bacterial organisms isolated from various sample of lung showed varying degree of sensitivity to the chemotherapeutic agents.Most effective/sensitive antibiotic against E. coli spp. was streptomycin followed by ampicillin, clarithromycin, ciprofloxacin, gentamicin and less sensitive towards, cefixime. Pseudomonas aeruginosa was found to be most sensitive to streptomycin followed by gentamicin, cefixime, ampicillin, clarithromycin and least to ciprofloxacin. K. pneumoniae revealed maximum sensitivity to streptomycin followed by ampicillin, clarithromycin, cefixime, gentamicin and least to ciprofloxacin.