Suitability of enhanced aquaculture feeds for commercial production of green sea urchin roe in a low-flow environment

强化水产养殖饲料在低流量环境下商业化绿海胆籽生产的适用性

• 批准号: 536872-2018
• 负责人: Gagnon, Patrick
• 金额: $ 0.91万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=651373
• 关键词: Suitability; enhanced; aquaculture; feeds; commercial

Pêcheries Shipek S.E.C. (PSSEC), a leader in commercial harvesting of key marine fish and shellfish species in**the northern Gulf of St. Lawrence (NGSL), recently completed collaborative research with Memorial**University of Newfoundland examining the suitability of a high-flow-through raceway containment system for**quick production of high volumes of green sea urchin roe. Results showed that the combined use of this system**and an advanced aquaculture feed can clearly achieve this goal. However, roe taste, and to a lesser extent color,**both varied with the consequence that a proportion of the roe produced was below standards for distribution on**international markets. The next logical step for PSSEC, therefore, is to test the suitability of enhanced versions**of the feed developed in the past few months. Because PSSEC also seeks to optimize its existing and**forthcoming facilities, it needs to test the feeds in other types of containment systems. The proposed follow-up**research will test the performance of three enhanced versions of the feed in a low-flow-through containment**system to help optimize the formulation of the feed, while minimizing the amount of water needed to maintain**proper environmental conditions for the urchins. We will carry out a feeding experiment in conical tanks with**pre-spawned urchins collected from the wild and exposed to the same optimal water temperature identified in**the previous research. Urchins will be fed with either of the three enhanced feeds. Urchins' physical state and**survival, as well as the amount of feed consumed, will be monitored weekly throughout. Roe yield and quality**will be assessed at the end of the experiment by a taste panel and with analysis of key biochemical compounds**affecting roe taste and color. Information gathered from this growing university-industry collaboration will be**used by PSSEC to examine the possibility of diversifying the range of species it provides to fishmongers, while**exporting a part of its own production directly to regional and international urchin roe markets.

Pêcheries Shipek S.E.C. （PSSEC）是北圣劳伦斯湾（NGSL）主要海洋鱼类和贝类商业捕捞的领导者，最近完成了与纽芬兰纪念大学的合作研究，研究了用于快速生产大量绿海胆卵的高流量通道密封系统的适用性。结果表明，该系统**与一种先进的水产饲料联合使用可以明显实现这一目标。然而，鱼子的味道（在较小程度上）和颜色（在较小程度上）都发生了变化，导致生产的一部分鱼子低于在国际市场上销售的标准。因此，PSSEC的下一个合乎逻辑的步骤是测试过去几个月开发的增强版本**的适用性。由于PSSEC也在寻求优化其现有的和即将到来的设施，它需要在其他类型的密封系统中测试进料。拟议的后续研究**将在低流量容器**系统中测试三种增强版饲料的性能，以帮助优化饲料配方，同时最大限度地减少为海胆维持适当环境条件所需的水量。我们将在锥形水箱中进行饲养实验，从野外收集**只预产卵的海胆，并将其暴露在与先前研究中确定的**相同的最佳水温中。海胆将被喂食三种强化饲料中的一种。海胆的身体状况和生存状况，以及饲料消耗量，将在整个过程中每周进行监测。在实验结束时，将由味觉小组评估鱼子的产量和质量，并分析影响鱼子口感和颜色的关键生化化合物。从这种不断增长的大学-工业合作中收集到的信息将**被PSSEC用来研究向鱼贩提供多样化鱼种的可能性，同时**将其部分产品直接出口到区域和国际海胆籽市场。