| 摘要: |
| 用IBV陕西分离株X,Fu,W和H株人工感染40日龄和19日龄的雏鸡复制人工病例,对其临床症状、大体病变和病理组织学变化进行了较详细的研究。结果表明, IBV陕西分离株具有较强的致病力,不仅能引起雏鸡发生呼吸道症状,而且可致严重的肾脏损伤,对19日龄鸡引起的临床症状和病理损害均比40日龄鸡更为严重。感染40日龄和19日龄鸡后,潜伏期、致死雏鸡的时间与病程分别为38～72 h和32～40 h, 96 h和48 h及25 d和7 d. |
| 关键词: 鸡，传染性支气管炎，病毒，人工感染试验，临床症状，病理组织学 |
| DOI： |
| 分类号:S858.31 |
| 基金项目:杨陵农业科技开发基金资助项目 |
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| Studies on the Symptoms and Pathological Changes of Young Chicken Challenged with IBV Isolated from Shaanxi Province |
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Yang Zengqi Xue Dengmin Zhao Yufang Li Yungang Zhang Yude,Yang Zengqi Xue Dengmin Zhao Yufang Li Yungang Zhang Yude,Yang Zengqi Xue Dengmin Zhao Yufang Li Yungang Zhang Yude
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| Abstract: |
| Using 4 isolates of IBV isolated from chicken flocks in Shaanxi Province,the artificial disease cases of IB were induced successfully by challenging 40 and 19 days' old chickens.The clinical symptoms and pathological changes ( especially in pathohistological changes ) of these chickens was observed in detail.The results indicated that the pathogenicity of the 4 isolates was very severe.They could cause the chicken not only to have obvious difficulty in breath but also have serious damage in kidney.The clinical symptoms and pathological change of the 19 days' old chickens were more serious than those of the 40 days' old ones. |
| Key words: avian infectious bronchitis virus,artificial infectious test,clinical symptom,pathohistological change |
