EL TIGANI ASIL1, ABDULKHALIG BABIKER2, ADAM ABBAKAR1
1University of Nayala, Pathology, Sudan
2University of Khartoum, Department of Pathology, Sudan
This study was carried out in Tamboul slaughterhouse (Butana region of the Sudan) and Nyala slaughterhouse (western region of the Sudan) to investigate the condemnation causes of Dromedarius camel's lung. Two hundreds and six camels were inspected at post-mortem in both areas (136 camels in Tamboul and 70 camels in Nyala abattoirs). The main causes of lung condemnation in Tamboul were found to be parasitic (hydatidosis) 40.4%, pneumonia 19.1%, abscess 2.9%, caseated nodules 8.8%, emphysema 6.6%, necrosis 5.9%, fibrosis 4.4%, adhesions 1.5% and aspirated blood 2.2% while in Nyala the causes of condemnation were found to be hydatidosis 61.4%, pneumonia 31.4%, abscess 8.5%, caseated nodules 5.7%, emphysema 2.9% and fibrosis 12.9%. Grossly 35.7% of the total hydatidosis infection (98 lungs) found to be associated with other pathological lesions. Nevertheless, the adjacent hydatid cyst sections showed pneumonic changes viz: emphysema, oedema, atelectasis, alveolar congestion, peribronchial lymphoid tissue hyperplasia and interstitial pneumonia. Suppurative pneumonia (bacterial) causes that detected as 32% of the total condemnations and the microorganisms involved were, Staphylococcus spp. 27.9%, Corynebacterium spp. 13.9%, Streptococcus spp. 13.9%, Bacillus spp. 12.8%, Pneumococcus spp. 11.8%, Enterobacteria spp. 9.6%, Micrococcus spp. 6.4%, Haemophilus spp. 2%, Actinoycetes spp. 1%, Pasteurella spp. 1% and Pseudomonas spp. as 1%. Experimental infections in rats with different representative isolates were conducted using intraperitoneal, intramuscular and subcutaneous routes. The inoculated isolates were not produce deaths in rats up to 15-17 days post inoculation. However, post-mortem findings in some rats inoculated intraperitoneally showed congestion of lungs, heart, liver, liver fatty change, hydropic degeneration of kidneys and visceral congestion. The histopathology of pneumonic bacterial sections showed purulent bronchopneumonia, abscessation, haemorrhages, fibrinous exudation and interstitial pneumonias. The lymph node sections stained with H&E showed various degrees of lymphadenitis. The sections stained with Zeihl Neelson stain revealed acid fast tubercle bacilli in one section.
Keywords: Camel, condemned lung, dromedarius, pathology