Seaweed meal as a high value nutrient supplement in aquafeeds

由于成本增加和鱼粉和鱼油供应不确定，有必要寻找替代方案。 水产饲料中蛋白质和其他营养物质的来源。在选择原料时应注意的重要问题 水产饲料包括氨基酸和脂肪酸组成、消化率、适口性、利用率和加工。 成本。尽管海藻具有用于动物饲料的潜力，因为它们通常符合选择 根据标准，它们还没有被纳入商业水产饲料。我们的行业合作伙伴Cana-Add Inc. 有兴趣在鱼类食物中添加海藻粉，以减少鱼粉的使用量，提高生产率和 增强鱼类对疾病和环境胁迫的抵抗力。Cana-Add Inc.也想知道 用氨基酸强化海藻粉可提高其对鱼类的有益效果。建议的目标 因此，研究是为了(I)确定当地可获得的棕色海藻(海带)的最佳包含率 大西洋鲑鱼饲料，(Ii)评估添加谷氨酸和精氨酸是否能改善有益结果 在三文鱼饲料中添加海藻粉，(Iii)评估三文鱼是否在饲料中添加 海藻粉和氨基酸强化对环境胁迫的抵抗力更强，以及(Iv)评估 补充海藻粉对能量代谢和免疫功能的影响。Cana-Add Inc.将使用 在这项研究中产生的关于添加海藻的鲑鱼饲料的配方和商业化的信息 进餐以提高生产力和增强抗压/抗病能力。

Due to increasing cost and uncertain supply of fishmeal and fish oil, there is a need to identify alternative sources of protein and other nutrients in aquafeeds. Important considerations in the selection of ingredients for aquafeeds include amino acid and fatty acid composition, digestibility, palatability, availability, and processing costs. Although seaweeds have the potential for use in animal feed because they generally meet the selection criteria, they have not been incorporated in commercial aquafeeds. Our industry partner, Cana-add Inc., is interested in supplementing fish food with seaweed meal to reduce fishmeal use, increase productivity and enhance resistance of fish to diseases and environmental stress. Cana-add Inc. would also like to know if fortifying seaweed meal with amino acids improves its beneficial effects in fish. The objectives of the proposed research are therefore to (i) identify the optimal inclusion rate of locally available brown seaweeds (kelp) in Atlantic salmon feed, (ii) assess if fortification with glutamate and arginine improves the beneficial outcomes of seaweed meal supplementation in salmon feed, (iii) assess if salmon raised on feed supplemented with seaweed meal and fortified with amino acids are more resistant to environmental stress, and (iv) assess the effect of seaweed meal supplementation on energy metabolism and immunity. Cana-add Inc. will use the information generated in this study to formulate and commercialize salmon feed supplemented with seaweed meal to improve productivity and boost stress/disease resistance.