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Effects of structural environmental enrichment on welfare of juvenile seabream (Sparus aurata)

机译：结构环境富集对少年鲷鱼福利的影响（烟草拍摄）

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Current production systems of finfish aquaculture, and in particular intensive farming systems, can cause welfare problems leading not only to poor condition of the fish but also to a decrease in product quality. Adding structural environmental enrichment (EE) to bare rearing environments may improve the welfare of certain cultured fish. In this study we experimentally demonstrate the positive effects of adding structural EE on rearing environments of juvenile seabream ( Sparus aurata ). Fish maintained for 35 days with EE showed less aggression and interactions with the net pen, and lower erosion of pectoral and caudal fins, compared to fish kept in bare conditions (non-enriched, NE). In addition, EE modified the horizontal distribution of fish in the experimental cage, increasing the use of the inner areas. Non-significant effects of EE were observed on fish body condition and growth, and on brain monoamines levels and mortality. Nevertheless, this work highlights the potential use of structural EE to improve welfare of juvenile seabream, which might be feasible to apply at larger-commercial scale.
机译：目前的翅目水产养殖生产系统，特别是密集的农业系统，可能导致福利问题不仅导致鱼类状况不佳，而且还降低了产品质量。将结构环境富集（EE）添加到裸露的环境中可能改善某些培养鱼的福利。在这项研究中，我们通过实验证明了在少年鲷鱼（Sparus aurata）的饲养环境中添加结构EE的积极作用。与EE保持35天的鱼与净笔的侵略性和相互作用表现出不那么少的侵略和相互作用，与裸露的鱼类保持在裸露的鱼类（非富集，NE）的鱼类相比，胸鳍侵蚀。此外，EE修改了实验笼中鱼的水平分布，增加了内部区域的使用。对鱼类状况和生长观察到EE的非显着影响，以及脑单胺水平和死亡率。尽管如此，这项工作突出了结构EE的潜在使用，以改善少年河流的福利，这可能是在较大商业规模上申请的可行性。

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