研究笔记:植物性水补充剂对肉水利用和坎皮洛巴克特菌控制的剂量和时间影响
Hanseo Ko1, Doyun Goo1, Hemanth Reddy Katha1
1Department of Poultry Science, University of Georgia, Athens, GA, USA.
Poultry science
|September 3, 2025
概括
饮用水中的植物性混合物 (PB) 有效地降低了 brojlers 中的 Campylobacter 殖民. 在处理前5天使用150mg/ l的PB获得最佳效果,证明了剂量和时间依赖的疗效.
科学领域:
- 禽类科学
- 微生物学
- 动物营养
背景情况:
- 坎皮洛巴克特 (Campylobacter jejuni) 是肉的重要病原体,对动物健康和食品安全构成风险.
- 植物性混合物 (PB) 是天然的料添加剂,其在牲畜中被研究为抗菌性质.
- 了解PB的最佳施用参数对于有效控制 brojlers的Campylobacter至关重要.
研究的目的:
- 评估植物性混合物 (PB) 在减少 brojlers中的Campylobacter殖民性的有效性.
- 确定不同PB剂量,养殖阶段和施用时间对Campylobacter负载的影响.
- 评估PB补充剂对肉生长性能,水摄入量和尸体产量的影响.
主要方法:
- 进行了两项实验,对肉进行了Campylobacter jejuni的试验.
- 实验1:给一天大的肉21天的不同剂量 (0-150mg/L).
- 实验2:在加工前给28天大的肉2天,3天或5天的PB (150mg/L). 测量了坎皮洛巴克特的负载,生长性能和尸体产量.
主要成果:
- 在实验1中,PB补充剂剂量依赖于Ceca,Digesta和肝脏中的Campylobacter殖民.
- 最高的PB剂量 (150毫克/升) 显示出囊中Campylobacter负载的最大降低.
- 在实验2中,PB在加工前5天的时间内显著降低了体和尸体冲洗中的Campylobacter负载.
- 随着PB水平或持续时间的增加,水摄入量暂时减少,但生长性能和尸体产量没有受到不利影响.
结论:
- 在饮用水中补充植物性混合物是一种有效的策略,可以减少 brojlers 的 Campylobacter 殖民.
- 在处理前5天服用150mg/ l的PB时观察到最佳疗效.
- 在不影响动物表现的情况下,PB在家禽生产中提供了有前途的天然替代品.
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