Aerosol vaccination against Newcastle disease. III. Field experiments in broiler chickens.
Two different aerosol generators were used for aerosol-vaccination of 128,000 broiler-type chickens having moderate to low maternal antibody titers with the B1 and LaSota strains of Newcastle disease virus (NDV). Efficacy of vaccination was evaluated from resistance to challenge with a velogenic strain (Texas GB) of NDV and hemagglutination-inhibition (HI) antibody titers, Both aerosol generators induced adequate immune response at the aperture settings used. There was little detectable benefit from vaccination at 1 day old, but antibody response and resistance to challenge were good from vaccination at 10 and 28 days of age.
D000336:Aerosols; D000818:Animals; D000917:Antibody Formation; D002645:Chickens; D006385:Hemagglutination Inhibition Tests; D009521:Newcastle Disease / Q000276:immunology / Q000517:prevention & control*; D014611:Vaccination / Q000379:methods / Q000662:veterinary*; D014765:Viral Vaccines / Q000008:administration & dosage
D000336:Aerosols; D014765:Viral Vaccines