Further advances in the nutritional and antibacterial treatments of rotifers as food for turbot larvae, Scophthalmus maximus L.
Gatesoupe, F.J. (1989). Further advances in the nutritional and antibacterial treatments of rotifers as food for turbot larvae, Scophthalmus maximus L., in: De Pauw, N. et al. (Ed.) Aquaculture: a biotechnology in progress: volume 1. pp. 721-730
In: De Pauw, N. et al. (1989). Aquaculture: a biotechnology in progress: volume 1. European Aquaculture Society: Bredene. ISBN 90-71625-03-6. 1-592 pp., meer
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Documenttype: Congresbijdrage
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| Abstract |
Rotifers fed on live algae and/or baker's yeast were enriched overnight with cod-liver oil and fed to turbot larvae. When live lactic bacteria were given to rotifers together wjth baker's yeast, vitamins, and cod-liver oil, the production rate of rotifers and the growth rate of turbot were improved. Fatty- acid enrichment was unnecessary if rotifers were fed a diet including 12% of cod-liver oil (dry matter basis). Whatever diet they were fed, rotifers which were disinfected with antibiotics for 24h. and rinsed in clean water, gave better survival or growth rate of turbot than rotifers fed with unchecked microflora. It is concluded that bacteria associated with rotifers are detrimental to turbot larvae. However, the dietary value of disinfected rotifers needs further improvement. Considering Free Amino Acid (FM) contents in whole larvae, this disinfection decreased the amount of free arginine which may be a limiting factor. Selected strains of bacteria can be inoculated after disinfection. That was exemplified by spores of Bacilus toyoi which improved the growth rate of turbot when they were given to rotifers for 2h. Their effect on FM contents in larvae was significant but it did not concern arginine. |
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