Clinicopathological and bacteriological investigation of chronic fowl cholera in commercial laying hens

bacteria fowl cholera gross pathology laboratory diagnosis laying hens Pasteurella multocida

Authors

Figure 2. Microbiological examination of bacterial isolate from laying hens with suspected chronic fowl cholera. Culture growth on blood agar (a) and chocolate agar (b), Gram-negative coccobacilli on Gram staining (c), and biochemical profiles supported phenotypic identification of Pasteurella multocida

Downloads

Fowl cholera, caused by Pasteurella multocida, remains a major threat to poultry health and productivity. This case study identified the etiological agent associated with clinical disease and gross lesions in laying hens from a commercial farm in Sumedang, West Java, Indonesia. The investigations included necropsy, bacterial culture, Gram staining, and biochemical characterization. Affected birds showed torticollis, conjunctivitis, mild wattle and comb swelling, respiratory rales, reduced feed intake, decreased egg production, greenish-white diarrhea, and lethargy. Necropsy revealed hemorrhagic lesions in the trachea, lungs, and intestinal mucosa, with absent developing ovarian follicles. Culture on blood and chocolate agar produced whitish-gray translucent colonies. Gram staining showed Gram-negative coccobacilli singly or in pairs. Biochemical findings supported the identification of P. multocida. Overall findings were consistent with chronic fowl cholera and underscored the importance of vaccination, biosecurity, and early surveillance to limit economic losses in commercial layer farms.

How to Cite

1.
Fath AD, Prayugo AD, Ziliwu PC, Silvester R, Windria S, Hartady T, et al. Clinicopathological and bacteriological investigation of chronic fowl cholera in commercial laying hens. ARSHI vet lett [Internet]. 2026 May 1 [cited 2026 Jul. 16];10(2):45-6. Available from: https://journal.ipb.ac.id/arshivetlett/article/view/70581

Pathology of proventricular tetrameriasis in a free-range chicken

Palagan Senopati Sewoyo, I Putu Cahyadi Putra, Willy Morris Nainggolan