Schmitt Eric, Belghit Ikram, Johansen Johan, Leushuis Raymond, Lock Erik-Jan, Melsen Diede, Ramasamy Shanmugam Ram Kathirampatti, Van Loon Joop, Paul Aman
Protix B.V. Industriestraat 3, 5107 Dongen, The Netherlands.
Institute of Marine Research, P.O. Box 1870 Nordnes, 5817 Bergen, Norway.
Animals (Basel). 2019 Apr 23;9(4):189. doi: 10.3390/ani9040189.
The production of food is an intensive source of environmental impact. In aquaculture, one source of impact is solid waste, which contains high concentrations of minerals, other nutrients, and metals. The larvae of are capable of consuming this material, but applying technology that is based on these larvae for managing waste streams, like those from aquaculture, requires careful examination of safety risks. A study is performed examining the growth performance of larvae that were fed on solid aquaculture waste. Subsequently, a thorough analysis of safety risks from inorganics, with detailed the results on microelements that have previously received little attention in the literature, is performed to serve as a guideline for how to assess the safety of waste streams such as these. Findings confirm existing results in the literature that Cd is bioaccumulative, but also that other elements, including Hg, Mn, and especially K, are bioaccumulative. To the authors' knowledge, this is the first research where the accumulation of Ag is also tested. The results of these tests are explained within the context of regulations in various countries where is cultivated, serving as a reference for practitioners to rigorously screen out high risk feed streams that they may consider using as feed sources. It is intended that these references and the demonstrated accumulation of a range of elements motivate comprehensive industry safety practices when evaluating new feed sources.
食品生产是环境影响的一个密集来源。在水产养殖中，一个影响源是固体废物，其含有高浓度的矿物质、其他营养物质和金属。[某种生物]的幼虫能够消耗这种物质，但应用基于这些幼虫的技术来管理废水流，比如来自水产养殖的废水流，需要仔细审查安全风险。开展了一项研究，考察以水产养殖固体废弃物为食的幼虫的生长性能。随后，对无机物的安全风险进行了全面分析，并详细给出了文献中此前很少受到关注的微量元素的结果，以此作为如何评估此类废水流安全性的指南。研究结果证实了文献中已有的结果，即镉具有生物累积性，但其他元素，包括汞、锰，尤其是钾，也具有生物累积性。据作者所知，这是首次对银的累积情况进行测试的研究。这些测试结果在[某种生物]养殖所在的各个国家的法规背景下进行了解释，为从业者严格筛选他们可能考虑用作饲料来源的高风险饲料流提供了参考。旨在通过这些参考以及一系列元素的累积情况证明，促使行业在评估新饲料来源时采取全面的安全措施。
