鸡传染性支气管炎的诊断及综合防治研究

Research on Diagnose and Synthetical Prevention of Avian Infectious Bronchitis of Chicken

对衡阳地区一些鸡场相继发生一种疑似NIB的疫病进行了研究。经实验室检查分离到2株病毒（H1株，W1株），根据分离毒鸡胚培养传代后的鸡胚病变、死亡及侏儒胚胎的出现以及生物学特性及幼鸡2次攻毒试验证明，2株分离毒均为NIBV，结合临床资料综合诊断为NIB。采集具有典型病变的脏器制成组织灭活苗治疗NIB，结合其它的综合措施，对衡阳地区8群共21500只发病鸡进行治疗，其死亡率分别为8％-15．8％，对照组死亡率均在32％以上，差异极显著（P〈0．01）。

Two strains of virus isolated from some chicken houses in Hengyang area were suspected as Avian Infectious Bronchitis virus based on the pathological changes of the infected chick embryo, biological characteristic and twice infection on chicken. The 21500 sicken chicken were treated by the tissues inactivation vaccine, which was prepared by collecting the viscera with typical pathological changes. The mortality rates of experimental group were 8% - 15.8% and control group was more than 32%, which had great difference （P〈0.01）.