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Growth and survival of European sea bass (Dicentrarchus labrax larvae fed from first feeding on compound diets containing medium-chain triacylglycerols Fontagné, S.; Robin, J.; Corraze, G.; Bergot, P. (2000). Growth and survival of European sea bass (Dicentrarchus labrax larvae fed from first feeding on compound diets containing medium-chain triacylglycerols. Aquaculture 190: 261-271. https://dx.doi.org/10.1016/S0044-8486(00)00401-4 In: Aquaculture. Elsevier: Amsterdam; London; New York; Oxford; Tokyo. ISSN 0044-8486; e-ISSN 1873-5622

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Beschikbaar in	Auteurs
VLIZ: Open access 33301 [ download pdf ]

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Marien/Kust

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Auteurs		Top
Fontagné, S. Robin, J. Corraze, G. Bergot, P.

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Abstract

A 21-day feeding trial was carried out to investigate the ability of first feeding European sea bass larvae to utilize medium-chain triacylglycerols as an alternative source of energy. Three compound diets based on soluble fish protein concentrate and yeast were supplemented with either 3% tricaproin (TC6), tricaprylin (TC8) or tricaprin (TC10). A diet containing triolein (TOL) was used as a reference diet. Diets were tested on four replicate groups of first feeding European sea bass larvae at 20°C, i.e. 6 days after hatching. At the end of the 21-day trial, TC8 yielded significantly higher survival (57±8% vs. 28±11% for the three other groups). Considered together, larvae fed TC8 and TC6 displayed better growth rates than larvae fed TOL and TC10 (final mean wet weights: 1.5±0.3 mg vs. 1.2±0.2 mg, respectively). The fatty acid composition of larval total lipid revealed a low deposit of medium-chain fatty acids (between 1 and 3% of total fatty acids) suggesting that medium-chain fatty acids were oxidized for energetic purposes. Tricaprylin and to a lesser extent tricaproin, appear to be potential energy sources for first feeding European sea bass larvae reared on compound diets.

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