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| Hamza, N; Mhetli, M; Ben Khemis, I; Cahu, Chantal; Kestemont, P. |
| This study was carried out to evaluate the effects of dietary phospholipid on the development and rearing performance of pikeperch (Sander lucioperca) larvae. From day 10 post-hatching, fish larvae were weaned onto three isoproteic and isolipidic formulated diets with different phospholipid (PL) levels: 1.4 (PL1), 4.7 (PL5) and 9.5% (PL9) of dry matter, as soybean lecithin. Neutral lipid (NL) with inversed gradient was incorporated in diets. Survival, growth and deformities were monitored until day 34 post-hatching, as well as intestinal enzyme activities, leucine alanine peptidase (leu-ala), aminopeptidase N (AN) and alkaline phosphatase (AP), which were used as indicators of digestive tract maturation. This study showed that PL supplementation... |
| Tipo: Text |
Palavras-chave: Pikeperch; Phospholipids; Larval development; Fatty acid; Digestive enzymes. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4149.pdf |
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| Zouiten, Dora; Ben Khemis, I; Besbes, R; Cahu, Chantal. |
| This work describes the ontogeny of the digestive tract in thick lipped grey mullet (Chelon labrosus) larvae reared until day 36 post-hatching with the semi-extensive technology in mesocosms. Diet was constituted by live preys, rotifers, Arternia and wild zooplankton, then compound diet was added from day 20 (p. h.). Linear growth, weight growth and digestive enzymes specific activities were studied during larval ontogeny. Pancreatic enzymes (trypsin and amylase) and intestinal enzymes (leucine-alanine peptidase "Leu-ala", aminopeptidase N "AN" and alkaline phosphatase "AP") were assayed in larvae sampled throughout the rearing trial to evaluate gastrointestinal maturation along the development. The trypsin specific activities were very high during the... |
| Tipo: Text |
Palavras-chave: Pancreatic enzymes; Intestinal enzymes; Fish larvae; Mesocosm; Chelan labrosus. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4585.pdf |
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