INFECTIOUS BURSAL DISEASE VIRUS INFECTION AMONG EGYPTIAN POULTRY FLOCKS IL Physio-chemical characterization of isolated virus

A, EI-SANOUSI; MADBOULY, H; EL-BAGOURY, G; EL-TARABILI, M; A-ABD EL-BAR, N; EL-NAK ASHLY, S; SABER, M; REDA, I

doi:10.21608/vmjg.1992.372212

INFECTIOUS BURSAL DISEASE VIRUS INFECTION AMONG EGYPTIAN POULTRY FLOCKS IL Physio-chemical characterization of isolated virus

Document Type : Original Article

Authors

10.21608/vmjg.1992.372212

Abstract

Two isolates of infectious Bursal Disease Virus (IBD V) were isolated from Ismailia (local,) and Kaliobia (local) governorates during an outbreak of Gumboro disease from 1989 to 1990. The isolated strains were identified by the agar gel precipitation test (AGPT) and serum neutralization test. Physiochemical studies of the isolated viruses revealed that these icosahedral naked particles measuring 54 nm in diameter, identical to those viruses be- longing to the family Birnaviridae. They have been found to be resistant to heating at 56°C for 8 hrs. beside their relative resistance to U.V. irradiation with slow inactivation rate. The isolates exhibited also a relative resistance to treatment with clolorform (10%) and Ether (20%). pH3 0 had no any Significant adverse effect on the infectivity of the isolated viruses.

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