The specific IgY was about 3.5% in the total IgY. The antibody activity was increased by ten times after affinity separation.

• 初步提取后的IgY经过免疫亲和层析柱；特异性的IgY抗体所占的总IgY比例达到3.；3%25左右；抗体活性提高10倍。