Fowl Cholera (Cholera Gallinarum)

Fowl cholera.

Pasteurella multocida subspecies multocida is the most common cause of fowl cholera, although P. multocida subspecies septica and gallicida may also cause fowl cholera-like disease to some extent. However, the virulence properties of the different subspecies for various hosts have not been elucidated. The severity and incidence of P. multocida infections may vary considerably depending on sever...

The Epidemiology of Fowl Cholera

The Epidemiology of Fowl Cholera

Field studies of fowl cholera on two commercial poultry farms are described. One farm, previously free of cholera, was studied during an active epidemic, which occurred during the winter months. The strains of P. avicida recovered, both from "autopsy" and from "healthy carriers" proved generally similar, and to be of the "fluorescent" or "intermediate" colony type, which is of relatively high v...

Preliminary Studies on Fowl Cholera in Layers

Pasteurella multocida the etiological agent of fowl cholera was isolated from 16 layer flocks in and around Faisalabad. The flocks ranged in age from 18-24 weeks. Increased mortality and considerable drop in egg production were the main clinical signs in all affected flocks. Bacterial isolation and identification was conducted on the basis of cultural, morphological and biochemical characterist...

Fowl cholera immunization in turkeys. 3. Significance of market quality in the evaluation of fowl cholera vaccines.

Turkeys vaccinated with various experimental vaccines and a commerical bacterin for fowl cholera and surviving an artificially induced epornitic were killed, and their carcasses were examined for wholesomeness. It was evident that, if the "fitness for human consumption" judgement was considered in addition to mortality, efficacy ratings of the various vaccines changed. This suggests that the "f...