Sesame extract could double fish feed production from available fish oil
Research at the
Professor Jana Pickova, who led the research team, explained. “We knew from the literature that substances from many plant species are known to be active modulators in animal metabolism. Examples for this are antioxidants, plant estrogens and others. For example, there were reports from
“The fish fed on the sesamin diet had significantly higher levels of DHA, up by around 37%, compared with the control group on the non-sesamin diet. This extra DHA came from a metabolic process in the fish, stimulated by the sesamin, that converted linolenic acid into DHA. We did not see any adverse effects on fish growth or health. In a parallel study, we found similar results in which -lipoic acid increased EPA levels.”
The research was recognised at the AquaVision 2008 conference in
Professor Pickova concluded, “If this work can be translated into commercial practice, we can significantly increase the amount of fish feed we produce from the fish oil that is sustainably available.”
At the same conference, Knut Nesse of Skretting Salmon Feeds announced that 800,000 salmon produced at the Centre for Aquaculture Competence (CAC) in
The results demonstrate commercially farmed salmon can be net fish protein producers, producing more fish protein than comes from the wild fish used in the feed.
These two advances announced at AquaVision 2008 clearly demonstrate that limits in the supply of marine raw materials do not need to frustrate future growth in the aquaculture industry.