0000000000717332
AUTHOR
Laura Ciriminna
Exploitation of food processing discards as main ingredients of sustainable feeds for the aquaculture of Paracentrotus lividus
Sea urchin gonads are considered a delicacy in many parts of the world, leading to an increase of fishing pressure and resulting in the decline of natural stock of commercially valuable species. Aquaculture could be the best solution to fill the gap between market demand and natural supply, but in a context of Sustainable Development and Blue Growth, aquaculture sector is called to reduce its ecological footprint. Aquaculture feeds are produced using ingredients obtained from natural resources already overexploited by human activities, such as fish meal and fish oil that are considered the best source of lipids, or cereal meals that are included as protein sources. In this context, in order…
Turning waste into gold: Sustainable feed made of discards from the food industries promotes gonad development and colouration in the commercial sea urchin Paracentrotus lividus (Lamarck, 1816)
Abstract Development of sustainable aquaculture practices is a suitable solution to reduce the pressure on overexploited stocks of the Mediterranean sea urchin, Paracentrotus lividus, and to respond to the increasing market demand. To move forward the Blue Growth and following the principles of circular economy, a three-month feeding experiment was conducted to test a sustainable feed based on food processing discards on sea urchins. Two feed formulations differing on the proportions of the two main ingredients (endive outermost leaves and European anchovy discards in a ratio of 60:40 and 80:20 respectively) were prepared and tested on P. lividus gonad yield, development and quality. The re…
Formulation of a new sustainable feed from food industry discards for rearing the purple sea urchin Paracentrotus lividus
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…