When measure the antibody response, the trivalent vaccine could produce comparatively high titre of the antibody, include AGP antibody of IBD (7. 42lg2), HI antibody of ND (9. 24lg2) and HI antibody of EDS76 (9. 18lg2).

• ND HI抗体效价达9.；24log2; EDS76HI抗体效价达9