The erythrocyte agglutination titer of virulent NDV in chicken embryo allantoic fluids was measured, and pathological changes of chicken embryo were examined.

• 结果与对照组比较,兔圆小囊抗菌肽使鸡胚尿囊液中新城疫病毒的血凝效价降低,同时还能抑制因以上新城疫病毒所引起的鸡胚病变。