用与制造菌苗株一致的培养物制备检测抗原，检测30日龄雏鸡免疫后抗体效价，对不同抗体滴度的雏鸡进行了攻毒保护性试验。
In the experiment we used the antigen to detect the valence of antibody of 30 days immuned chicken, which is the same antigen with the strains of chicken e.
全菌灭活疫苗浸泡免疫、注射免疫和微囊化疫苗口服免疫的抗体滴度（凝集抗体效价）平均分别为1：19、1：190、1：62；
The average antibody titers(agglutination titer)of the Whole-cell vaccine immunization, injection immunization and microencapsulated vaccine oral immunization were respectively 1:19,1:190,1:62;
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