Very Virulent Infectious Bursal Disease Virus
نویسنده
چکیده
The primary feature of vvIBDV is the ability to induce high mortality. Mortality ranges from 5% – 25% in broilers and 30% – 70% in layers. Surviving birds are severely affected with a high condemnation rate. vvIBDV induces clinical signs similar to Gumboro disease, which is induced by classical virulent strains of IBDV, except that the disease is more pronounced and acute in individual birds and generalised in flocks. Lesions are also more pronounced with haemorrhages in the bursa of Fabricius and muscular tissue and rapid bursal and thymic regression. Microscopic lesions are similar to those seen with classical types of IBDV.
منابع مشابه
Rapid differentiation between very virulent and classical infectious bursal disease viruses isolated in Iran by RT-PCR/REA
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