Tag DHA

A key to expanding aquaculture is finding alternative sources of proteins and oils. Supplementing or replacing fish oil in aquaculture feeds with alternative lipid sources – oils seeds, microalgae, insects and others – appears possible as long as essential fatty acid (EFA) requirements are satisfied. 

This 10-week feeding trial aimed at complementing existing information on largemouth bass responses to oils with supplemental EPA and DHA. Dietary supplementation of these essential fatty acids may be required in feeds for this species. 

Green water, which describes the typical water color in tropical aquaculture facilities, consists mainly of various phytoplankton species along with bacteria, protozoa and zooplankton. It is relatively easy to produce without any supplemented nutrients. 

The results of this study provide the first comprehensive evidence of the significant impact of dietary oils with different fatty acid class profile on the in vivo fatty acid metabolism of tilapia. 

A study assessed the nutritional value of farmed vs. wild white-fleshed fishes using hybrid striped bass, largemouth bass and bluegill. Results showed that farmed, white-fleshed fish are as nutritionally valuable – and in some cases, more so – than wild fish. 

Reformulating aquaculture feeds, an industrywide initiative to reduce dependence on wild fish, has changed farmed salmon’s nutritional profile, as BBC News reported recently. The researchers on whose work the report was based say of course it has, yet it remains one of the best sources for these crucial fatty acids. 

La innovación está llevando a nuevas opciones de ingredientes para fuentes renovables de ácidos grasos omega-3. Pero la replicación de ácidos grasos de cadena larga es una tarea difícil, como descubrió la colaboradora del Advocate Lisa Duchene. 

Innovation is leading to new ingredient options for renewable sources of omega-3 fatty acids. But Replicating long chain fatty acids is a tall order, Advocate contributor Lisa Duchene discovered. 

Are consumers fully aware of the health benefits of seafood? Many consumers do not act as if they are. It seems they do not have the information they need about the positive impacts the omega-3 fatty acids in seafood make on heart, brain and eye health. While fatty fish are especially good sources, any seafood is a better source of omega-3s than red meat. The need remains for clear communication and education about the health benefits, nutritional value and sources of omega-3s. 

Zebrafish offer a living model system for research in a wide variety of scientific disciplines. The Aquatic Resources Program at Children’s Hospital Boston recently identified an alternative feeding method that requires less labor. 

Many studies indicate that adequate seafood intake during pregnancy and lactation increases DHA exposure and has positive effects on infant behavioral development.