Studies on Colisepticaemia in Chickens In Saudi Arabia

E.coli serogroups 078, 086, 026, 0114, 0119 and 0127 were isolated from chiokens naturally showingsymptoms and post mortem lesions of oolieeptioaemiain Hail distriot in Saudi Arabia.3- The puthogeneoity of the isolated X.ool1 strains isolated from chickene to one day-old Qhickatogetharwith the symptoms, post mor.om losion$ were studied.3- 11 o orapar Lson between the pathogeneei ty of some ofthe isolated E.ooli strains isolated from chickensin Saudi Arabia and similar strains of E.coli already isolated froCJ ahickens in Egypt to one day-old chioken.swere studied.4~ The sensitivity of !.co.i Berogroupa isolated in Hail to different the~apeutio agents vitro werestudied.