Infectious bursal disease virus recombinant VP2 protein and application thereof in vaccine

The invention provides a recombinant VP2 protein and a gene for coding the protein, after the recombinant VP2 protein and an adjuvant are emulsified, a prepared vaccine is high in safety, has a very good immune effect on both a bursa of Fabricius classical strain and a variant strain, is small in required immune dosage, can effectively prevent infection of the bursa of Fabricius classical strain and the variant strain on chicken flocks, and has a good application prospect. The popularization and application values are realized. 本发明提供了一种重组VP2蛋白以及编码该蛋白的基因，本发明重组VP2蛋白与佐剂乳化后，制备的疫苗安全性高，对法氏囊经典株和变异毒株均具有很好的免疫效果，且所需免疫剂量小，能有效预防法氏囊经典株、变异株对鸡群的感染，具有推广应用价值。