This study shows that soybean oil can totally replace fish oil in California yellowtail aquafeeds without affecting production performance and reducing the omega-3 fatty acid profile of fish tissues, as long as acceptable levels of ARA and DHA are provided.
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
The availability of a cost-effective grow-out feed formulation is an ongoing bottleneck for the expansion of cobia production. Studies by the authors show that the development of an aquafeed with limited or no fish oil content is possible.
Fish oil sparing has proven difficult for fish species, like sea bass, that require the long-chain polyunsaturated fatty acids (LC-PUFAs) abundant in fish oil but lacking in most alternative fats and oils used in aquafeeds.