研究笔记:肠道本能:基于 brojiler部门的监测系统的沙门氏菌污染
L De Witte1, K De Reu2, F Van Immerseel3
1Flanders Research Institute for Agriculture, Fisheries and Food - Technology and Food Unit, Belgium; UGent - Ghent University, Faculty of Veterinary Medicine, Belgium.
Poultry science
|January 28, 2025
概括
在农场层面使用过度采样的沙门氏菌监测系统对于防止 brojiler肉中的污染是不可靠的. 在农场测试负面的群体中,很大一部分在屠宰时呈阳性,这表明需要重新评估监测策略.
科学领域:
- 食品安全 食品安全
- 兽医微生物学 兽医微生物学
- 动物传染病控制和控制
背景情况:
- 沙门氏菌病是欧洲主要的动物传染病,家禽肉是传染的重要来源.
- 作为预防措施的物流屠宰取决于精确的农场级沙门氏菌监测.
- 目前的农场监测系统容易产生假阴性结果,从而损害了物流屠宰的有效性.
研究的目的:
- 为了评估农场级沙门氏菌监测的准确性,使用过度采集的样本.
- 为了比较农场水平的沙门氏菌状况与屠宰时获得的结果.
- 发现沙门氏菌检测中的差异,并为监测协议的改进提供信息.
主要方法:
- 通过 overshoe 样本 (农场水平,屠宰前 3 周) 确定的沙门氏菌状况与屠宰时的肠道含量分析 (duodena 和 ceca) 的比较.
- 测试了153只肉群,分析了每群30个胃肠道包装.
- 利用后勤屠宰原则,区分无沙门氏菌和受污染的群体.
主要成果:
- 尽管农场一级的 overshoe 结果是负面的,但屠宰时在肠道样本中,20.9% 的群体检测出沙门氏菌阳性.
- 沙门氏菌 (68.8%) 和帕拉蒂菲B种类. 爪 (25.0%) 是主要的血清病毒.
- 沙门氏菌更频繁地被检测到十二指肠的内容 (90.6%) 比 cecal 内容 (53.1%).
- 在5周和6周大的鸟类之间没有观察到流行率的显著差异.
结论:
- 目前在农场一级的沙门氏菌过度排放监测系统显示出严重的局限性.
- 农场和屠宰监测之间的差异需要进一步研究.
- 对监测系统的重新评估对于有效的物流屠宰和家禽肉安全至关重要.
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