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Marian Ponce¹, Victoria Anguís¹, Catalina Fernández-Díaz¹

¹IFAPA Centro El Toruño, Camino Tiro Pichón s/n, 11500, El Puerto de Santa María (Cádiz), Spain.

Fish & shellfish immunology

|January 31, 2024

概括

乌尔万是一种海洋多糖,在1%的饮食水平上增强了鱼类的免疫力,提高了对疾病的抵抗力. 较高剂量 (2%) 降低免疫功能,但1%的补充剂在戒断后显示持久的益处.

科学领域:

水产养殖营养水产养殖营养
海洋生物技术海洋生物技术
免疫学免疫学免疫学

背景情况:

免疫营养提供了水产养殖中的预防策略.
乌尔万是一种海藻多糖,具有免疫调节性质.
塞内加尔 (Solea senegalensis) 是一个重要的水产养殖物种.

研究的目的:

为了评估Ulva ohnoi乌尔瓦提取物作为塞内加尔幼幼的免疫营养素的短期和长期影响.
评估ulvan对免疫基因表达和血免疫参数的影响.
为了确定Ulvan的最佳饮食水平,以抵抗疾病.

主要方法:

从U. ohnoi中提取Ulvan,使用热水和乙醇沉.
在体外分析乌尔万对塞内加尔独巨细胞的影响.
在体内养试验中,饮食补充了1%和2%的乌提取物.
挑战测试使用光细菌damselae亚种. piscicida (Phdp) 在养后和抽出后.
对和血免疫活动中的免疫基因表达的分析.

主要成果:

乌尔旺提取物在体外没有影响巨细胞活力和上调免疫基因表达.
饮食1%的乌尔万能增强免疫反应和短期抗病能力.
食2%的乌尔文降低了杀菌活性,并没有提供对Phdp的保护.
长期治疗 (戒药后30天),1%的Ulvan组显示免疫反应有所改善.

结论:

来自U. ohnoi的Ulvan可以作为水产养殖中的有效免疫营养素.
1%的食中含有乌尔旺可以增强塞内加尔幼鱼的抗病能力.
最佳剂量至关重要,因为更高的水平 (2%) 可以损害免疫功能.

关键词:

免疫营养素是一种免疫营养素.天生的免疫反应.巨细胞是一个巨细胞.摄影细菌症 (Photobacteriosis) 是一种细菌病.这种植物是Solea senegalensis.硫化多糖类的硫化多糖类.乌尔万·乌尔瓦恩 (Ulvan Ulvan) 是一个非常古老的民族.

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