First data on growth of cultured brown meagre Sciaena umbra using diets with different protein and fat contents

TitleFirst data on growth of cultured brown meagre Sciaena umbra using diets with different protein and fat contents
Publication TypeJournal Article
Year of Publication2006
AuthorsChatzifotis, S, Villamor Martin-Prat A, Limberis N, Papandroulakis N, Divanach P
JournalFisheries Science
Volume72
Issue1
Pages83 - 88
KeywordsBrown meagre, growth, Macronutrient selection, Protein, Self-feeder
Abstract

Brown meagre Sciaena umbra Linnaeus 1758 is a demersal species living at depths of 0-200 m with a wide distribution in the Mediterranean Sea, Black Sea and eastern Atlantic Ocean. It exhibits nocturnal behavior and occupies bottom caves and seabeds covered with vegetation. This study presents the first data on brown meagre growth under culture conditions and contributes some basic information on its dietary protein requirement by feeding isoenergetic diets with different protein-lipid ratios by means of self-feeders. Fish with 78.8 ± 15.8 g (mean ± standard deviation) body weight were divided into four groups and subjected to four different feeding regimes with three replications for 77 days. In the first group, fish were supplied with a high protein and low fat diet (HPLF, 52: 8 w/w fat-protein ratio), the second one a medium protein and medium fat diet (MPMF, 42: 14), the third with a low protein and high fat diet (LPHF, 31: 23). In the fourth group, fish had access to both HPLF and LPHF diets. Fish fed on HPLF and MPMF diets showed significantly better growth and feed conversion ratios than fish fed on the LPHF diet. Fish with access to HPLF and LPHF diets exhibited comparable growth to the HPLF group but their feed conversion ratio was significantly higher. The condition factor and hepatosomatic index revealed no significant differences between dietary regimes. The liver of brown meagre may serve as a depository organ for energy, judging from its relatively high lipid content (39-43%).

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-33645073706&partnerID=40&md5=7265f3b2409d301070f64b53ce3b2e1d

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