Replacing live foods with microencapsulated diets in the rearing of seabass (Lates calcarifer) larvae: do the larvae ingest and digest protein-membrane microcapsules?

Investigation of highly unsaturated fatty acid metabolism in the Asian sea bass, Lates calcarifer

“…Compared to other countries like Thailand and Indonesia, the production cost for L. calcarifer in Malaysia is still high at between 15 and 20%, with the high cost of fish meal and oil-based feeds being the primary factor (FAMA 2005). Although some nutritional aspects of L. calcarifer have been investigated, lipid nutrition has not been intensively studied (Walford et al 1990;Rimmer et al 1994;Boonyaratpalin et al 1998;Williams et al 2003).…”

Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (Solea senegalensis)

“…In rearing larvae of many marine fish species, varying proportions of inert diets may be used in co-feeding regimes to partially replace live feeds (Appelbaum, 1989;Rosenlund et al, 1997;Kolkovski and Tandler, 2000), which are expensive and frequently variable in nutritional quality. This feeding strategy is designed to overcome the inability of the undeveloped digestive system of early larval stages to break down inert food particles, by taking advantage of the increased digestion and assimilation of inert diets in the presence of live food within the gut (Walford et al, 1991;Kolkovski et al, 1997). Co-feeding strategies have potential economic benefits through the improvement of the nutritional status of the larvae as well as pre-conditioning them for better acceptance of inert weaning feeds at an earlier stage (Cahu and Zambonino-Infante, 1995;Rosenlund et al, 1997).…”

Producción de larvas de peces: Innovación y avances en la nutrición para contribuir al mejoramiento y escalamiento de los cultivos

“…De este estudio se concluye además, que la co-alimentación es tan buena como la alimentación con presas vivas para las larvas de G. maculatus, obteniéndose los peores resultados con la utilización de 100% microdieta, como ocurre con la mayoría de las especies en donde se han utilizado microdietas Mookerji & Ramakrishna-Rao, 1991;Marte & Duray, 1991;Walford et al, 1991;Koskela & Pirhonen, 1991;Tandler & Kolkovski, 1991;Takeuchi et al, 2003). Sin embargo, en la mayoría de los trabajos, al igual que en este estudio, falta por dilucidar si existe un efecto de las microdietas inertes más allá de la primera alimentación, por lo que es necesario que los experimentos concluyan más tardíamente para llegar a conclusiones más certeras.…”

“…Currently, none of the commercially available microdiets (MDs) match the performance of live food organisms. Although weaning the larvae from Artemia onto a MD can be achieved at metamorphosis in many species (Dabrowski, 1984;Foscarini, 1988;Hardy, 1989), the early introduction of prepared diets as the sole replacement for live food has met with limited success Barnabe, 1976;Appelbaum and Van Damme, 1988;Walford et al, 1991). A clear example of the superiority of live food over commercial microdiets was demonstrated by Curnow et al, (2006 a,b, Figure 1).…”