title: Laboratory and field trials with formalin-inactivated Escherichia coli (O78)-Pasteurella anatipestifer bacterin in white pekin ducks.
abstract: A combination Escherichia coli serotype O78 and Pasteurella anatipestifer bacterin was developed and tested in white pekin ducks in laboratory and field trials. Inoculations with bacterin at 2 and 3 weeks of age provided significant protection against challenge with virulent E. coli O78 and Pasteurella anatipestifer serotypes 1, 2, and 5. No significant cross-protection was observed against heterologous E. coli serotypes, although there was a slight reduction in mortality in ducklings challenged with E. coli serotypes O2a and O119. In field trials, the E. coli-P. anatipestifer bacterin produced significant reduction of mortality in commercial white pekin ducks compared with P. anatipestifer bacterin.
mesh_terms: D000818:Animals; D001428:Bacterial Vaccines / Q000276:immunology*; D004372:Ducks; D004926:Escherichia coli / Q000145:classification / Q000276:immunology*; D004927:Escherichia coli Infections / Q000517:prevention & control / Q000662:veterinary*; D007114:Immunization / Q000662:veterinary; D010325:Pasteurella / Q000145:classification / Q000276:immunology*; D010326:Pasteurella Infections / Q000517:prevention & control / Q000662:veterinary*; D011201:Poultry Diseases / Q000517:prevention & control*; D012141:Respiratory Tract Infections / Q000517:prevention & control / Q000662:veterinary*; D012703:Serotyping; D014613:Vaccines, Attenuated / Q000276:immunology
chemical_list: D001428:Bacterial Vaccines; D014613:Vaccines, Attenuated