Insights into organic farming of European sea bass Dicentrarchus labrax and gilthead sea bream Sparus aurata through the assessment of environmental impact, growth performance, fish welfare and product quality

摘要: Abstract The organic farming of sea bass and bream was investigated in a commercial farm by assessing environmental impact, growth performance, fish welfare product quality multidisciplinary approach. Organic conventional juveniles were reared four circular 3.800 m 3 floating cages at maximum final stocking density 15 kg/m fed on or feeds. Conventional started simultaneously monitored as the reference condition. Environmental biological samplings performed after 16 months first harvesting. No impact observed area, whereas significant increase total phosphorus concentration sediment some changes structure species composition benthic assemblages detected just beneath with no 25 m from cages. showed better performance consistent lower feed conversion ratio higher metabolic status, evidenced protein energy profiles, compared fish. dietary influence stress immune response observed. A incidence fin splitting occurred, probably due to nutritional factors and/or larger size Similar good morphological, physical sensory traits between observed, denoted high fillet yield, low flesh lipid content, long freshness shelf life both bass. Conversely, fatty acid different, being poorer n-3 PUFA richer linoleic (C18:2 n-6) versus fish, mirroring profile diet. exhibited an overall performance. Husbandry feeding practices did not produce any evident although long-period investigations covering several full production cycles are needed. grew well, displayed state well-being had features despite EPA DHA content. Improvement formulation ingredients emerge important issues be addressed optimize bream.