We also developed a preprolis vaccine with 8 strains of bordetella avium coming from different area.Used the vaccine to vaccinate 1-day-old and 11-day-old chick groups, the preventive rate is low.

• 同时还用不同来源的8株禽波氏杆菌制成蜂胶灭活苗，并分别免疫1日龄和11日龄雏鸡，结果发现本疫苗对雏鸡的保护率低。