果和Bacillus subtilis共生组合促进了疾病抵抗力,但不是生长性能,是鱼类中的添加剂
Nilesh Anil Pawar1,2, Chandra Prakash1, Mahinder Pal Singh Kohli1
1ICAR-Central Institute of Fisheries Education, Mumbai, 400061, India.
Scientific reports
|July 13, 2023
概括
果氧糖 (FOS) 和 Bacillus subtilis (BS) 作为共生菌显著改善了Labeo fimbriatus手指的生长和免疫力. 0.5%的FOS和10^6 CFU/g BS的最佳组合增强了鱼类的健康和疾病抵抗力.
科学领域:
- 水产养殖营养和免疫学
- 鱼类健康管理 鱼类健康管理
- 替代性料添加剂 替代性料添加剂
背景情况:
- 水产养殖为可持续的养殖寻找抗生素的替代品.
- 鱼 (Labeo fimbriatus) 是一个在水产养殖中重要的鱼物种.
- 果糖 (FOS) 和细菌 (BS) 是潜在的增长促进剂和免疫增强剂.
研究的目的:
- 评估FOS和BS单独或作为协生菌对Labeo fimbriatus指纹的生长性能和免疫反应的疗效.
- 确定最佳的FOS和BS食水平,以改善鱼类的健康和抗病能力.
- 评估这些补充剂对肠道形态学和免疫学参数的影响.
主要方法:
- 六种实验性饮食,含有不同水平的FOS (0%和0.5%) 和BS (0,10^4,10^6 CFU/g) 被给L.fimbriatus60天.
- 测量了生长参数 (体重增加,特定生长率,料转换率) 和料利用率.
- 用Aeromonas hydrophila O:18挑战鱼类,以评估生存率和免疫学参数 (WBC,NBT,酶等). ) 的情况.
主要成果:
- 细菌细菌 (BS) 显著改善了生长和料利用率,而单独的FOS没有显著的影响.
- 当FOS和BS被结合时,观察到对生长和料利用的协同效应.
- FOS和BS都改善了免疫学参数,组合 (0.5%的FOS和10^6 CFU/g BS) 在免疫功能和抗病能力方面取得了最大的改善.
结论:
- 饮食补充FOS和BS,特别是在组合中,可以增强Labeo fimbriatus的生长,料利用率和免疫状态.
- 0.5%的FOS和10^6 CFU/g BS的组合是改善的生长,免疫力和抗病能力的最佳选择.
- 这些发现支持使用FOS和BS作为水产养殖料中有效的,无抗生素的替代品.
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