Some Studies On Colibacillosis of Friesian Calves In Dumyat Governorate

The study was applied to investigate the presence of E. coli strains in newly born Friesian calves and their role in calf diarrhoea, and illustration of the electrophoretic patterns of serum proteins in diarrhoeic and apparently healthy Friesian calves inserologically typed into serogroups 026, 0125, 0128, and 0124 in diarrhoeic calves, whereas 46.4% could be typed into the same serogroups in apparently healthy calves. 42.9% strains could not be typed from apparently healthy calves and 37.8% could not be