Use of fish trimmings and byproducts in fishmeal and fish oil is a win for aquaculture. But challenges loom, including logistics and economics.
With byproducts representing between 25 to 50 percent of the weight of various fish species, we need to be looking at how the entire fish is being used: even the heads, guts and skin.
Gorjan Nikolik, senior industry analyst for Rabobank, presented on fishmeal’s transformation from commodity to a “high-priced strategic protein” at the Global Aquaculture Alliance’s annual GOAL conference in Vancouver. See the full video of his presentation.
Gamma irradiation treatment presents a possible processing technique for reducing anti-nutrients and improving the nutritive quality of many feed ingredients.
The authors conducted a study to determine how replacement of salmon meal with various animal protein meals in feed affected the growth performance of white shrimp.
New cost-effective additives, such as fishery byproducts, will likely be needed to meet the increasing demand for feeding stimulants by aquafeed producers.
Meat recovered from seafood processing byproducts could be combined with nutraceutical ingredients to form customizable seafood items.
Wastes produced during food processing can be treated to generate a valuable single-cell protein ingredient for aquafeed with protein and amino acid content similar to fishmeal.
Animal byproducts like blood meal, meat and bone meal and other rendered products are good sources of cholesterol for use in aquaculture feed.