肉感染性支气管炎的病理和分子调查:分析生物安全漏洞的影响
Jelena Maletić1, Nemanja Jezdimirović2, Ljiljana Spalević1
1Department of Epizootiology and Health Care of Poultry and Birds, Scientific Veterinary Institute of Serbia, Belgrade, Serbia.
Frontiers in veterinary science
|March 17, 2025
概括
brojlers 感染性支气管炎 (IB) 爆发与生物安全性不佳有关. 农场管理和疫苗接种策略的缺陷使野生IB病毒菌株传播,导致显著的死亡率.
科学领域:
- 兽医病毒学 兽医病毒学
- 管理家禽的健康管理
- 农场生物安全 农场生物安全
背景情况:
- 传染性支气管炎 (IB) 在家禽中造成重大经济损失.
- 有效的生物安全对于控制肉养殖场IB传播至关重要.
研究的目的:
- 调查传染性支气管炎疫情与肉养殖场生物安全实践之间的关系.
- 确定有助于IB病毒循环的特定生物安全缺陷.
主要方法:
- 在一个死亡率高的农场进行了血清学,病理学,分子学和生物安全评估.
- 在各种样本中使用PCR检测IB病毒RNA.
- 评估了外部和内部的生物安全措施.
主要成果:
- 升高的IB病毒抗体标位表明,尽管接种了疫苗,但仍暴露于野生菌株.
- 病理学和组织病理学发现揭示了IB特征性病变.
- 在所有测试样本中,PCR确认了IB病毒RNA.
- 发现了重大生物安全缺陷,包括交叉污染问题和群体管理不足.
结论:
- 生物安全缺陷促进了野生IB病毒菌株的引入和传播.
- 不充分的疫苗选择,不匹配当地血清型,加剧了这个问题.
- 强有力的生物安全协议对于防止家禽养殖场的IB至关重要.
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