College of Medical and Health Sciences, School of Veterinary Medicine, Wollega University, P. O. Box 395, Nekemte, Ethiopia
Review Article
A Review on Infectious Bursal Disease in Poultry
Author(s): Akinaw Wagari*
Infectious bursal disease (IBD) is caused by a virus that is a member of the genus AviBirnavirus of the family Birnaviridae. Although turkeys, ducks, guinea fowl and ostriches may be infected, clinical disease occurs solely in chickens. Only young birds are clinically affected. Severe acute disease of 3-6-week-old birds is associated with high mortality, but a less acute or subclinical disease is common in 0-3-week-old birds. This can cause secondary problems due to the effect of the virus on the bursa of fabricius. IBD virus (IBDV) causes lymphoid depletion of the bursa and if this occurs in the first 2 weeks of life, significant depression of the humoral antibody response may result. Two serotypes of IBDV are recognized; these are designated serotypes 1 and 2. Clinical disease has been associated with only serotype 1 and all commercial vaccines are prepared against this serotype. Ve.. View More»
DOI:
10.35248/2471-268X.21.7.167
