Vaccination is an effective means to prevent and/or reduce the adverse effects of specific diseases in poultry. Poultry refers to birds that people keep for their use, and generally includes chicken, turkey, duck, goose, quail, pheasant, pigeon, guinea fowl, pea fowl, ostrich, emu and rhea.
Winter can bring increased live respiratory vaccine reactions in broiler chickens. These reactions may be especially severe during cold months because broiler houses are more tightly sealed then to conserve heat. This closed environment of the broiler hou