菌和螺旋藻对双流连续培养系统中的细菌群体组成的影响
E Sarmikasoglou1, R R Lobo2, L F Roesch3
1Department of Animal Science, Michigan State University, East Lansing, MI, 48824, USA.
Translational animal science
|July 21, 2025
概括
在奶牛的饮食中用菌和螺旋藻代替大豆粉改变了反动物细菌. 这些藻类补充剂增加了与酸生产相关的细菌,影响了功能.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 鲁门发酵 鲁门发酵
背景情况:
- 大豆粉 (SBM) 是乳牛饮食中常见的蛋白质来源.
- 藻类,如Chlorella pyrenoidosa和Spirulina platensis,是潜在的替代蛋白质补充剂.
- 了解藻类对反动物微生物群落的影响对于优化奶牛营养至关重要.
研究的目的:
- 评估用菌或螺旋藻部分取代大豆粉对高产奶牛的反动物细菌群体的影响.
- 分析细菌丰富度和社区结构的变化,以应对藻类补充.
主要方法:
- 在复制的3x3拉丁方形设计中采用了双流连续培养系统.
- 饮食包括一种对照 (大豆) 和两种治疗,其中50%的大豆被菌或螺旋藻替代.
- 细菌群体结构和差异性丰度使用PERMANOVA和R. limma包在R. limma中进行了分析.
主要成果:
- 与对照饮食相比,藻类补充剂增加了流体部分中的Ruminobacter的相对丰度.
- 固体部分中的Butyrivibrio和Pseudobutyrivibrio在养藻类的群体中较低.
- 菌补充剂导致流体部分中的鲁米诺细菌比螺旋藻更丰富.
结论:
- 将大豆粉部分替换为菌或螺旋藻可以改变奶牛的反动物细菌群落.
- 藻类补充似乎增强了与酸生产相关的细菌.
- 这些发现表明,使用藻类作为乳牛饮食中可持续蛋白质来源的潜在好处.
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