Infectious bronchitis

• Viral disease of poultry caused by corona virus.
• Characterized by sneezing, coughing, respiratory rales, deposition of urates in kidney, etc.

a) Etiology:

• Adeno virus

b) Symptoms:

• Sneezing, coughing, respiratory rales and dyspnoea
• Drop in egg production
• Watery discharge from eye and nostrils
• Thin and watery yolk
• Thin shelled eggs

c) Diagnosis:

• Symptoms and lesions
• Immunological test
• Isolation and identification of virus

d) Transmission:

• Incubation period is 18-36 hours
• Inhalation and ingestion
• Aerosol, faeces, contaminated feed

e) Treatment and prevention:

• Antibiotics for 3-5 days
• Employ warm and moist mash
• Raise the temperature of brooder
• Vaccination