The immunorheophoresis (IR) technique was used for the detection of in
fectious bursal disease antigen from bursae collected from field cases
and experimentally infected chickens. When these results were compare
d with that of the agar gel immunodiffusion (AGID) test, they showed e
xcellent agreement as determined by kappa value. However, the time tak
en for the appearance of the precipitin lines was reduced from 14-24 h
r in the ACID test to 3-5 hr in the IR technique.