添加Pediococcus acidilactici的液体发酵谷物没有减少猪的断奶后腹 - - 一个大肠杆菌挑战研究
Jiajia Xu1, Samantha Joan Noel1, Charlotte Lauridsen1
1Department of Animal and Veterinary Sciences, Aarhus University, Tjele, Denmark.
Frontiers in veterinary science
|May 30, 2023
概括
用益生菌发酵液体料 (FLF) 改善了小猪生长和肠道健康,当受到肠毒性大肠杆菌 (ETEC) 的挑战时. 这种养策略支持益生菌的增殖,有助于从断奶压力中恢复.
科学领域:
- 动物营养 动物营养
- 微生物学 微生物学
- 猪生产 生产 猪生产
背景情况:
- 断奶小猪面临的挑战包括压力和潜在的肠道感染.
- 营养毒性大肠杆菌 (ETEC) F4是一种重要的病原体,会导致断奶后腹.
- 益生菌,如Pediococcus acidilactici,显示出改善肠道健康和性能的潜力.
研究的目的:
- 为了研究发酵液体料 (FLF) 与Pediococcus acidilactici对被ETEC F4.挑战的断奶小猪的影响.
- 评估对腹,表现,免疫反应和肠上皮质屏障功能的影响.
主要方法:
- 46只断奶小猪被分为四组:无挑战/干,有挑战/干,无挑战/FLF,有挑战/FLF.
- 针对特定群体,ETEC F4 挑战是口头进行的.
- 发酵液体料 (FLF) 涉及谷物的24小时发酵与P. acidilactici.
- 收集了便和血液样本进行分析.
主要成果:
- 与干燥料组相比,FLF组的平均每日增益 (ADG) 在数值上更高.
- 通过增加便FaeG基因水平和ETEC F4在挑战群体中的存在来验证ETEC挑战模型.
- 在FLF和干挑战群体之间,在腹发病率,血哈普托格洛宾,C反应蛋白,血液学或上皮屏障功能方面没有发现显著差异.
- 在第一个星期,在被挑战的FLF群体中,ADFI低于非被挑战的群体.
结论:
- 用Pediococcus acidilactici发酵的液体料可以为小猪提供高水平的益生菌.
- 在ETEC挑战中,感染率很低,猪从断奶压力中恢复过来.
- FLF显示出作为一种支持小猪健康和表现的战略的潜力,尽管在本研究中对ETEC特定参数的直接影响没有显著改变.
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