Molecular Characterization of Chicken Anaemia Virus in Layers.

Chicken Anaemia Virus (CAV) is one of the emerging pathogens of the poultry with its genome containing three pathologically important gene viz.VP1, VP2 and VP3. In the present study, molecular detection and histopathological examination was carried out on 25 pooled tissue samples collected from birds suspected of CAV from different districts of Maharashtra. From 25 pooled samples, 20 samples were found positive for the VP3 gene with an amplicon size of 376 bp. Histopathological examination revealed the loss of stem cells in the bone marrow and lymphocytes and RBCs in the white and red pulp of spleen. Liver and kidney showed degenerative changes. The VP3 gene confirmed tissue samples were used for chicken embryo inoculation. For virus inoculation, 07 days old embryonated chicken eggs were inoculated with viral inoculum via yolk sac route. The inoculated eggs were incubated at 37°C for 10 days. The eggs were harvested after 10 days and confirmed with PCR which revealed VP3 positive results. [ABSTRACT FROM AUTHOR]

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