Newcastle desease(ND) hemagglutination inhibition(HI) antibody titer,the hemolysis activity of total complement in serum and the content of serum globulin were detected on day 7,14,21,28,35 and 42,respectively.

• 在试验的第14、21、28、35、42天分别采血,对肉鸡的新城疫血凝抑制反应(HI)抗体滴度、血清总补体溶血活性、血清球蛋白含量进行了测定。