Isolation and identification of the causative agent of fowl cholera in Iraq and preparation of vaccines against the disease 1- Isolation of the causative agent of fowl cholera and study of it’s properties. Hatem M .Mhanam , Ather K. Kassab , Esmail K. Shubber

Abstract

It was possible to obtain 17 isolates of Pasteurella multocida from
infected laying chickens with fowl cholera. Three isolates were from the chronic
phases of the naturally infected chickens and other fourteen were from the acute
phases. The identification of these isolates was considered. Fifteen isolates
belong to the sub species multocida and two isolates to gallicida, ten isolates
belong to the SE-190 isolate and one to SE-077, while six isolates were not
identified. Twelve of the isolates have a capsule. The LD50s of these isolates
were varied. The results of sensitivity to antibacterial drugs revieled that all
isolates were sensitive to Penicillin and resistance to Lincomycin with various
degrees of sensitivity to other antibacterial drugs.