The most updated information on avian influenza with a practical approach. The authors review the aetiology, clinical signs, diagnosis, and control of avian influenza viruses. It also includes numerous graphic resources to make the contents more understandable to readers.
Infectious bronchitis is an acute and highly contagious respiratory disease of chickens characterized by respiratory signs comprising gasping, coughing, sneezing, tracheal rales and nasal discharge. In addition, severe respiratory distress may occur in young chickens. Respiratory distress, decrease in egg production, and loss of internal egg quality and eggshell quality have been reported in layers. Some strains of the virus produce severe kidney damage and may be associated with high mortality.
Updated review of Newcastle disease presented in a visual and practical manner. The chapter dedicated to the clinical diagnosis of the disease will surely be of great interest to the reader. The vaccination section provides the main guidelines to prevent vaccine failures and control the immunological status of the operation.
