补充Bifidobacterium可以改善LPS诱导的免疫应激和肠道屏障功能障碍
Cihang Zhang1, Usman Nazir2, Shi Chen1
1Yangzhou University, College of Animal Science and Technology, 2 25009 Yangzhou, China.
Poultry science
|January 30, 2026
概括
食Bifidobacterium补充剂有效地改善了受脂多糖化物 (LPS) 挑战的小的生长性能和肠道健康. 300毫克/公斤的最佳剂量Bifidobacterium减轻了炎症和氧化应激,增强了家禽的肠道性.
科学领域:
- 动物科学动物科学
- 肠道健康 肠道健康
- 禽类营养 养 禽类营养
背景情况:
- 脂聚糖 (LPS) 诱导的肠道炎症对家禽生产构成重大挑战,影响其生长和健康.
- 在密集型家禽养殖中,有效的饮食策略对于增强肠道性和免疫功能至关重要.
研究的目的:
- 评估饮食补充Bifidobacterium对LPS压力小的生长性能,肠道健康和免疫反应的影响.
- 确定Bifidobacterium的最佳剂量,以减轻LPS诱导的小的压力.
主要方法:
- 总共有288只一天大的江南雄性白被接受了2×3的因数设计,用Bifidobacterium剂量 (0.300,600 mg/kg) 和LPS挑战 (0.5 mg/kg).
- 评估了生长性能 (ADFI,ADG,FCR),肠道形态 (维卢斯高度,密室深度),炎症类细胞因子水平 (IL-1β,IL-6,TNF-α,IL-10) 和抗氧化酶活性 (SOD,CAT,GSH-Px).
主要成果:
- LPS压力显著降低了生长性能和损害了肠道形态,同时调高了促炎性细胞因子和抑制了抗氧化酶.
- 用300毫克/千克的Bifidobacterium补充剂显著改善了平均每日增益 (ADG) 的16.7%,增强了的高度,并增加了43.3%的催化酶 (CAT) 活性.
- 与较高剂量或没有补充剂相比,300 mg/kg Bifidobacterium剂量有效降低了炎症,改善了抗氧化能力,恢复了肠道完整性.
结论:
- 用300mg/kg的食补充剂Bifidobacterium是一种有效的策略,可以减轻LPS诱导的肠炎症和小的氧化应激.
- 这种干预改善了肠道完整性,减少了全身炎症,增强了抗氧化能力,并最终提高了密集生产中的生长效率.
- Bifidobacterium显示出作为一个具有成本效益的饮食干预措施,以改善家禽在压力条件下的弹性和健康的潜力.
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