Aqua-feed for cultivating cleaner fish to eradicate sea lice from salmon

用于培育清洁鱼类以消灭鲑鱼中的海虱的水产饲料

• 批准号: 91633
• 金额: $ 11.5万
• 依托单位: WORLD FEEDS LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=91633
• 关键词: Aqua; feed; cultivating; cleaner; fish

Salmon farms across the world are being devastated by infestations of sea lice that target salmon. There is an undeniable need for greater volumes of healthy cleaner-fish to control (eat) sea-lice off farmed salmon. However, the current approach is to extract cleaner-fish from the 'wild' and breeding them in captivity on feeds that are nutritionally deficient. As a result, mortality rates are significant, and sea lice numbers continue to proliferate within salmon farms.Salmon production in Norway and Scotland combined has been falling by about 10% a year and costing the salmon industry hundreds of millions a year in lost revenues.Anti-parasitic medicines to control sea-lice are adopted but, treatments are environmentally toxic and can impact upon water quality, affect local wildlife and reduce the quality of the fish for consumers. Using cleaner-fish (larvae extracted from the wild) is an established alternative, but mortality rate is extremely high due to nutritional deficiencies and inefficient feeding mechanisms; 'wild' stocks are dwindling as a result.World Feeds presents herein a new approach on breeding cleaner-fish sustainably in captivity within hatcheries. The approach will significantly reduce the need to harvest cleaner-fish from the 'wild' (allowing stocks to recover) and will afford salmon farmers an unbroken supply of disease-free cleaner-fish.

世界各地的鲑鱼养殖场正受到以鲑鱼为目标的海虱侵扰的破坏。不可否认，需要更多的健康清洁鱼来控制养殖鲑鱼上的海虱。然而，目前的方法是从“野生”中提取更清洁的鱼，并用营养不足的饲料饲养它们。因此，死亡率很高，海虱数量继续在鲑鱼养殖场内激增。挪威和苏格兰的鲑鱼产量每年下降约10%，鲑鱼产业每年损失数亿美元。采用抗寄生虫药物控制海虱，但治疗方法对环境有毒，可能影响水质，影响当地野生动物，降低消费者鱼的质量。使用清洁鱼（从野外提取的幼体）是一种既定的替代方案，但由于营养缺乏和低效率的饲养机制，死亡率极高;“野生”种群因此而减少。World Feeds在此介绍了一种在孵化场内可持续养殖清洁鱼的新方法。这种方法将大大减少从“野生”捕捞清洁鱼的需要（允许种群恢复），并将为鲑鱼养殖户提供无病清洁鱼的不间断供应。