需要高分辨率的肠道微生物组表征,以设计可持续水产养殖生产的有效策略
Shashank Gupta1, Arturo Vera-Ponce de León1,2, Miyako Kodama3
1Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway.
Communications biology
|October 25, 2024
概括
微生物群导向纤维 (MDF) 对大西洋鱼肠道微生物群和生理学的影响最小,即使在较高剂量下也是如此. 未来的战略可能需要针对不同的微生物群体,以便在鱼水产养殖中产生有益影响.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 水产养殖营养水产养殖营养
背景情况:
- 微生物群导向纤维 (MDF) 正在探索如何在动物生产中增强肠道微生物.
- 曼南衍生纤维,包括α-曼诺利高糖 (MOS) 和β-曼南,是常见的料补充剂.
研究的目的:
- 调查特定的MDF对大西洋鱼肠道微生物组合和功能的影响.
- 评估不同饮食含量水平的β-曼南对鱼生理和新陈代谢的影响.
主要方法:
- 大西洋鱼肠道内容的多原子分析 (元纳米学,基因表达).
- 食试验中,饮食中补充了0.2%的α-曼南和β-银糖曼南和4%的β-曼南.
主要成果:
- 低剂量 (0.2%) 的MDF对鱼基因表达,肠道微生物组结构和功能的影响微乎其微.
- 高剂量 (4%) 的β-曼南改变了肠道微生物组合,但没有显著的生理益处.
- 一个单一的Burkholderia-Caballeronia-Paraburkholderia群体显示出一致的转变,但没有证据表明直接利用β-曼南或有益的代谢物产生.
结论:
- 经过测试的MDFs,在评估的剂量下,在调节大西洋鱼肠道微生物群以改善宿主生理方面是无效的.
- 进一步的研究应该探索针对鱼中潜在有益的内源乳酸细菌的替代MDF策略.
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