海藻幼虫在宏藻侧流上培养:彩虹鱼的新型海洋蛋白质和欧米茄-3来源
Niklas Warwas1,2,3, Emma L Berdan4, Xintian Xie1
1Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
Aquaculture nutrition
|November 18, 2024
概括
海洋昆虫幼虫 (SWFL) 是彩虹鱼水产养殖的可持续料成分. SWFL粉支持与鱼粉相似的增长,尽管料效率略低,这表明其在循环经济水产养殖系统中的潜力.
科学领域:
- 水产养殖营养水产养殖营养
- 基于昆虫的料成分 基于昆虫的料成分
- 可持续的水产养殖可持续的水产养殖
背景情况:
- 鱼类水产养殖面临的挑战是采购海洋衍生的营养物质,如omega-3脂肪酸,氨酸和氨酸.
- 昆虫是有前途的替代品,因为它们丰富的营养成分.
- 在藻类上养的Coelopa frigida (SWFL) 幼虫提供了潜在的海洋衍生化合物来源.
研究的目的:
- 评估SWFL作为彩虹鱼 (Oncorhynchus mykiss) 的料成分.
- 为了比较SWFL养鱼的生长性能和肠道健康状况,与那些养鱼粉或黑士兵幼虫 (BSFL) 鱼粉的人进行比较.
主要方法:
- 制定了四种异能和异蛋白饮食:对照 (鱼粉),商业参考,SWFL替代和BSFL替代.
- 对彩虹鱼进行了为期10周的养试验.
- 分析了特定生长率 (SGR),料摄入量,料转化率 (FCR) 和肠道健康参数.
主要成果:
- 用SWFL养的鱼类表现出与对照和参考组相似的SGR,表现优于用BSFL养的鱼类.
- 与对照组和BSFL组相比,SWFL养的鱼类的料摄入量更高.
- 与对照组相比,两种基于昆虫的饮食的FCR都更高,这表明生物可用性较低.
- 在所有饮食中,肠道健康状况保持良好,尽管SWFL和BSFL群体之间的电基运输有所不同.
结论:
- SWFL是彩虹鱼的可行的替代海洋料成分.
- 它在海洋侧流上的种植与循环生产系统保持一致.
- 需要进一步研究不同昆虫食的生物可用性和特定影响.
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