Five local isolates of infectious bursal disease virus from different geogr
aphical area of Tamil Nadu were characterized by RT-PCR-RE assay to find ou
t the genomic variants of IBDV. The variable region of VP2 of IBDV was ampl
ified by RT-PCR techinque using IBDV specific primers. The amplified produc
t was subjected to different restriction enzymes digestion, viz. Hac III, S
au 3 AI and Alu I. The enzyme Alu I was useful to differentiate the local i
solates at genomic level.