Tag fishmeal

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

Chlorella and other species have potential as protein sources in aquafeeds. In trials with tilapia fry raised in a recirculating system, the fish received a fishmeal-based control diet or feeds with portions of the fishmeal replaced by Chlorella. 

A study evaluated the potential of pink salmon testes meal, a fisheries byproduct, as a feed ingredient to replace fishmeal in diets fed to juvenile Pacific threadfin. Results showed the salmon testes meal contained high levels of protein, taurine and arginine. 

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. 

Nutrition research run in conjunction with the breeding program ensures that cost-effective feeds are optimized for shrimp performance for a five-year project undertaken in Brunei Darussalam to develop advanced technology for production of large black tiger shrimp. 

Traditionally accepted calculations of wild fish use in feed for major farmed species tend to misrepresent fishmeal use. Some more current calculation methods require separate calculations for fishmeal and fish oil, or focus on quantity of protein from wild-caught fish. 

After a decade of research, Korea has produced individual glass eels for Japanese eel aquaculture. Despite dependence upon the wild seed, Japanese eel aquaculture production has been growing significantly and comprises over 27 percent of Korea’s freshwater aquaculture. 

A study investigated the effects of storage temperature and duration on the quality of finished fishmeal fed to juvenile shrimp. Diets with 15 percent fishmeal were stored at 4 or 30 degrees-C for six months or 12 months. 

A project of the Soy-in-Aquaculture program evaluated the feasibility of using soy protein concentrate and soybean meal to replace fishmeal in cobia diets. 

Key molecules found in animal byproduct hydrolysates show potential for use as functional ingredients in aquaculture feeds. Animal co-product hydrolysates from slaughterhouse waste and rendered animal byproducts present a protein alternative. 

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

Cottonseed meal is high in protein and less expensive than fishmeal and soybean meal. Cotton plants can be engineered without gossypol in their seeds. 

In a nutrition trial, longfin amberjack received two diets composed of 40 percent soy protein concentrate and 10 percent fishmeal, and a control diet with 20 percent fishmeal. 

In a 10-week study of nursery-reared Pacific white shrimp performance, the inclusion of Spirulina meal allowed reduction of fishmeal up to 25 percent with no detrimental effect on shrimp growth performance.