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

Pêcheries Shipek S.E.C.（PSSEC）是 ** 圣劳伦斯湾（NGSL）北方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，研究了高流量通过水道遏制系统对 ** 快速生产大量绿色海胆卵的适用性。结果表明，该系统 ** 和先进的水产养殖饲料的组合使用可以明显实现这一目标。然而，鱼子的味道，以及较小程度上的颜色，** 都不同，结果是所生产的鱼子的比例低于在 ** 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提要的增强版本 ** 的适用性。由于PSSEC还寻求优化其现有和即将到来的设施，它需要测试其他类型的遏制系统的饲料。拟议的后续 ** 研究将测试三种增强版饲料在低流量通过遏制 ** 系统中的性能，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。我们将在锥形水槽中进行喂养实验，将从野外收集的 ** 产卵前的海胆暴露在与先前研究中确定的相同的最佳水温下。海胆将喂食三种增强饲料中的任何一种。在整个过程中，将每周监测海胆的身体状态和 ** 存活率，以及饲料消耗量。在实验结束时，将通过味道小组和影响鱼子味道和颜色的关键生化化合物 ** 的分析来评估鱼子的产量和质量 **。从这种不断增长的大学-工业合作中收集的信息将被PSSEC用于研究其向鱼贩提供的物种范围多样化的可能性，同时 ** 将其自己的一部分产品直接出口到区域和国际市场。

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.