CAV genomeencodes three kinds of proteins: VP1(51.6KD), VP2(24.OKD) andVP3(13.6KD), respectively. VP1 is the only capsid protein of CAy,itcan induce chickens to produce immune protection with the help ofVP2 protein.

• CAV基因组编码三种蛋白：VP1（51.；6KD），VP2（24