Avian infectious bronchitis

Avian infectious bronchitis
SpecialtyVeterinary medicine

Avian infectious bronchitis (IB) is an acute and highly contagious respiratory disease of chickens. The disease is caused by avian infectious bronchitis virus (IBV), a coronavirus (Coronaviridae, Orthocoronavirinae, genus Gammacoronavirus, subgenus Igacovirus),[1] and characterized by respiratory signs including gasping, coughing, sneezing, tracheal rales, and nasal discharge. In young chickens, severe respiratory distress may occur. In layers, respiratory distress, nephritis, decrease in egg production, and loss of internal (watery egg white) and external (fragile, soft, irregular or rough shells, shell-less) egg quality are reported.[2][3]

  1. ^ Martins, Nelson (January 16, 2020). "International Committee on Taxonomy of Viruses". International Committee on Taxonomy of Virus. Retrieved January 16, 2020.
  2. ^ "Infectious Bronchitis: Introduction". The Merck Veterinary Manual. 2006. Archived from the original on 22 June 2007. Retrieved 2007-06-17.
  3. ^ Cavanagh, D., and S. A. Naqi. Infectious bronchitis. In: Diseases of poultry, 11th ed. Y. M. Saif, ed. Iowa State University Press, Ames, IA. pp. 101–120. 2003.