【摘要】 法氏囊病是近几年危害我区十分严重的一种传染病。固始县年饲养固始鸡 50 0万只 ,该病近二年在养鸡场中经常发生 ,造成较大经济损失。经调查分析发现 ,造成免疫失败的主要原因是雏鸡母源抗体水平低。据此 ,作者修改了免疫程序。经生产中使用 ,效果很理想更多还原

【Abstract】 IBD is a kind of in fectious disease of serious harm in Xinyang,Five million Gushi chickenes are feeded in Gushi every year,IBD usually happenes in chicken farm there two years ,and it has made more economic losses.The main causes of immunity failure were discovered that lower mother’s antibody of chick by in vestigating and analysing.writer revises immune procedure,and its effect is very ideal by using in production.更多还原