Treatment & Control
Peri-focal vaccination may not be effective for the combat of an outbreak, due to the rapidity of wild-IBDV spreading.
Passive immunity may protect against challenge with homologous IBDV, as does previous infection with homologous avirulent strains. Breeder flocks may be immunised against IBD so that they would transfer protective antibodies to their progenies, such as broiler and pullet chicks. Low-attenuated vaccine strains may cause damage to the bursa of Fabricius and immunosuppression in susceptible chicks. Biosecurity with adequate restriction to farm visitation and distancing from other flocks. Post outbreak hygiene measures may not be effective as the virus can survive for long periods in both housing and water.
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2 enlarged bursae : yellowish grey (right) and haemorrhagic (left)
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caseous exsudate in bursa of Fabricius
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lesions of kidneys
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haemorrhages in proventriculus and gizzard
Read more about this topic: Infectious Bursal Disease
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