A new sustainable formulated feed based on discards from food industries for rearing the sea urchin Paracentrotus lividus (Lmk)

Geraldina Signa, Salvatrice Vizzini, Antonio Mazzola, Salvatore Romano, Geraldina Signa, Salvatrice Vizzini, Antonio Mazzola, Giulia Visconti

Risultato della ricerca: Articlepeer review

3 Citazioni (Scopus)

Abstract

During a 18‐week experiment in a sea‐based system, Paracentrotus lividus was fedwith two formulations of a new sustainable feed whose main ingredients were foodfarming discards, mostly outermost lettuce leaves, in different percentage. Egg whitewas added as protein source and binder, and a little amount of commercial fish feedwas added as lipid source. At the end of the experiment, a high survival rate (>80%)and an increase in test diameter (22%), total weight (130%), gonad weight (240%) andgonad index expressed as size‐adjusted gonad weight (288%) were recorded. Gonadsachieved a good colour and high levels of essential and polyunsaturated fatty acids,hence representing a commercially valuable product. Comparing the two feed formulations,the one with the lower lettuce content (57% vs. 67%) led to the best productquality, in terms of gonad features (gonad index and colour) and content of essentialfatty acids. In order to move towards a higher sustainability of the aquaculture sector,this study proposes a low‐cost feed, produced with cheap and sustainable ingredientssuch as food farming discards.
Lingua originaleEnglish
pagine (da-a)691-701
Numero di pagine11
RivistaAquaculture Nutrition
Volume25
Stato di pubblicazionePublished - 2019

All Science Journal Classification (ASJC) codes

  • Aquatic Science

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