The serological responses of chickens to mass vaccination with a live V4 Newcastle disease virus vaccine in the field and in the laboratory. 1. Meat chickens.

@article{Bell1991TheSR,
  title={The serological responses of chickens to mass vaccination with a live V4 Newcastle disease virus vaccine in the field and in the laboratory. 1. Meat chickens.},
  author={Ingram Bell and Paul J. Nicholls and C. W. Norman and Keith Cooper and Genni Cross},
  journal={Australian veterinary journal},
  year={1991},
  volume={68 3},
  pages={85-9}
}
Meat chickens on commercial broiler farms were vaccinated once at 1 to 15 days of age with a live V4 Newcastle disease virus (NDV) vaccine administered by drinking water, aerosol or coarse spray. Hatchmates were housed and similarly vaccinated in laboratory isolation pens. Samples of birds were bled at weekly to fortnightly intervals and the serums tested for haemagglutination inhibiting antibody to NDV. Log2 mean titres of up to 6.26, and assumed protection levels (based on the percentage of… CONTINUE READING