Can fresh U. lactuca harvested weekly from a land-based integrated multi-trophic aquaculture system be utilized as a nutritional supplement or partial replacement for pelleted feeds in the production of Litopenaeus vannamei?
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.
Change the aquafeed paradigm by viewing feed as an investment, instead of simply as a cost. This can result in greater profitability.
Although its overall production is rising, aquaculture is using less fishmeal and fish oil in feed formulations, and increasing amounts of this fishmeal and oil come from byproducts of fish processing.
Gamma irradiation treatment presents a possible processing technique for reducing anti-nutrients and improving the nutritive quality of many feed ingredients.
Adaptable and diverse, polychaetes can adapt their feeding behaviors to environmental conditions. Nereis diversicolor, a marine polychaete that can tolerate wide temperature and salinity ranges, is a good candidate for RAS enhancement.
The intrinsic values of better feeds directly affect shrimp growth and performance in a positive way, but because better feeds produce less waste materials in culture systems, they also result in improved water quality that indirectly improves shrimp performance.
Facing rising aquafeed costs, researchers and farmers are investigating ways to lessen resources spent on feeds by feeding less and feeding differently at small-scale aquaculture operations.
The results of recent feed trial research showed potential profitability for the combination of good shrimp production from a biofloc-dominated super-intensive grow-out raceway system achieved with effective diets.
Facing shifting pricing and availability for traditional aquafeed ingredients, formulators are increasingly moving toward alternative starch and protein from plant sources like pea products.
A series of experiments showed that fishmeal is not an essential ingredient in hybrid tilapia feeds and that plant protein-based diets can yield results similar to those obtained with diets containing 10 percent fishmeal.
A study was performed to determine the effects of puerarin, a biologically active ingredient in the roots of kudzu, on stress modulation in farmed salmon.
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.
For an intensive shrimp nursery, the main goal in feeding is to supply each animal the proper quantity of feed where it can be easily accessed and consumed.
With the market volatility of fishmeal, as well as rising sustainability concerns, the aquaculture industry is seeking sources of protein, such as animal byproduct concentrates, to substitute for fishmeal.
Extrusion manufacturing of aquafeeds has recently seen advances in several areas. The development of new die technology has multiplied hourly output.