Tag fish oil

Fish is the world’s most traded protein – and a healthy choice that will help feed the world’s growing population into the future. Aquaculture represents the most efficient method by which to convert feed to edible protein, and its use of marine ingredients is being addressed. 

In a study of juvenile cobia diets, results suggested that lipid sources with high levels of saturated fatty acids and low polyunsaturated fatty acids can replace a large percentage of fish oil in feeds if they are amended with DHA. 

A 56-day trial conducted in greenhouse-enclosed clearwater and greenwater systems compared tissue variations among shrimp fed varied dietary levels of fish oil and soy lecithin. 

Scientists have been working to understand cobia’s nutritional requirements and advance the economic and environmental sustainability of feeding carnivorous fish using fishmeal alternatives. 

Tons of aquaculture byproducts are available as sources for fishmeal and fish oil to supplement the supplies obtained from fisheries. Innovative technologies are supporting more efficient use of these by-products in aquafeed. 

Authors evaluated how limiting dietary essential amino acids and long-chain polyunsaturated fatty acids would affect the growth performance of white shrimp raised in a zero-water-exchange biofloc system. The shrimp were fed diets with varied levels of fishmeal and fish oil and supplemented with soy products. 

Low-input culture practices for freshwater prawns can manage their growth and biological characteristics so they can be fed no fishmeal or fish oil. 

Alternative lipids have achieved varied success in ensuring adequate growth and fatty acid composition in fillets. The authors evaluated rainbow trout raised on diets containing fish oil or a blend of fish and standard or modified lipids varying in fatty acid composition. 

The authors evaluated graded substitution of fish oil with soybean oil in feeds for juvenile cobia and found a substantial amount of dietary fish oil can be spared without sacrificing production performance. 

The aquaculture industry has significantly reduced fishmeal levels in feeds for major farmed species. To further reduce fishmeal use, new research approaches are essential. 

In studies, the physical and sensory qualities of fillets from tilapia fed diets with 100 percent substitution of fish oil with various palm oil fractions were generally not affected by the change of dietary oil source. 

The amount of fishmeal and fish oil used in aquaculture has remained static, while output from aquaculture has increased. 

The substitution of plant proteins and oils for fishmeal and fish oil can result in minimal changes to proximate compositions in various fish. However, the muscle fatty acid composition usually reflects that of the diet. 

By feeding different oils at different points in a fish's life cycle, such as finishing feeds, farmers can tailor the composition of fillets to maximize value and minimize fish oil use. 

A laboratory study indicated gilthead sea bream can be grown on feeds in which fishmeal and fish oil levels are reduced from traditional values using soy products.