Formulation of a new sustainable feed from food industry discards for rearing the purple sea urchin Paracentrotus lividus

Laura Ciriminna, Geraldina Signa, Concetta Maria Messina, Antonio Mazzola, Salvatrice Vizzini, Geraldina Signa, Salvatrice Vizzini, Antonio Mazzola

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)1046-1057
Number of pages12
JournalAquaculture Nutrition
Volume26
Publication statusPublished - 2020

All Science Journal Classification (ASJC) codes

  • Aquatic Science

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