The lack of suitable feeds for echinoculture has led to use natural resources already widely exploited by human activities. To move towards a higher sustainability of echinoculture, this study proposes a sustainable feed for Paracentrotus lividus. Two experimental formulations were obtained using discarded endive (Cichorium endivia) leaves and anchovy (Engraulis encrasicolus) industry discards in different proportions, and agar as a binder. The evaluation of the feed stability showed that the feed was stable for 72 hr, allowing a suitable feeding for sea urchins. Both formulations showed a proper nutritional value and fatty acid profile, corresponding to the features of the main ingredients and resulting suitable for echinoculture. A bioenergetic trial was carried out to measure daily ingestion rate, absorption efficiency and gonado‐somatic index in sea urchins. They resulted also palatable and well absorbed by sea urchins, especially that one with higher fish content. At the end of the experiment, an increase in gonado‐somatic index was also recorded. Despite further analysis is needed to assess the performance of the feed in terms of gonad yield and quality, these encouraging results indicate that food industry discards may be suitable alternative ingredients for the production of sustainable feeds for sea urchin aquaculture.

中文翻译：

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配制来自食品工业的新型可持续饲料，用于饲养紫色海胆Paracentrotus lividus

缺乏适合于棘手动物养殖的饲料已导致利用人类活动已经广泛开发的自然资源。为了向更高的可持续性发展棘手动物，这项研究提出了一种可持续的饲料为Paracentrotus lividus。使用废弃的菊苣（Cichorium endivia）叶片和an鱼（Engraulis encrasicolus）获得了两个实验配方。）工业以不同比例丢弃，而琼脂作为粘合剂。进料稳定性的评估表明进料可以稳定72小时，因此适合海胆进食。两种配方均显示出适当的营养价值和脂肪酸谱，与主要成分的特征相对应，因此适合食管培养。进行了一项生物能试验，以测量海胆的日摄入率，吸收效率和性腺体细胞指数。它们的结果也令人愉悦，并被海胆很好地吸收，尤其是那些海鱼含量更高的海胆。在实验结束时，还记录了性腺体细胞指数的增加。尽管需要进行进一步分析以评估生殖腺的性腺产量和品质，