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OJVRTM

 Online Journal of Veterinary Research©

Volume 18(2): 101-108, 2014. Redacted 2017.

Severe chronic unilateral granulomatous pneumonia in a caged layer flock associated with Pasteurella gallinarum

 

J. Ashrafi1, A. Aslnajjari2,*, M. Madadi3, J. Pazani4, M. Asmand5

 

1,3Faculty of Veterinary Medicine, University of Tabriz, 2Faculty of Veterinary Medicine, University of Shiraz, 5Veterinarian, Tehran, Iran, 4Poultry Health, Production, Melbourne, Australia

 

ABSTRACT

 

Ashrafi J, Aslnajjari A, Madadi M, Pazani J, Asmand M., Severe chronic unilateral granulomatous pneumonia in a caged layer flock associated with Pasteurella gallinarum, Onl J Vet Res., 18(2): 101-108, 2014.  A case of naturally occurring severe chronic unilateral granulomatous pneumonia in caged layer flocks infected by Pasteurella gallinarum in reported. Birds showed declining egg production, sneezing and dyspnea. At necropsy severe unilateral consolidation of the lung with airsacculitis and hydrosalpinx were observed. Liver, heart, pancreas, brain and intestines were severely congested. Microscopically, granulomatous lesions were observed in the affected lungs with severe lymphocytolysis in follicles of the bursa of Fabricius and spleen. Salpingitis, acute focal tubulointerstitial nephritis and severe granulomatous myositis were also observed. Pasteurella gallinarum was isolated from affected lungs. Mycobacterium or fungal hyphae were not detected with contact smears even with specific staining. Results suggest that granulomatous lesions may have been induced by P. gallinarum but complicated by Escherichia coli and Mycoplasma gallisepticum infection.

 

Keywords: Pasteurella gallinarum, granuloma, unilateral, pneumonia, airsacculitis.

 

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