Aquafeeds

Given the finite supply of fishmeal and other marine protein sources, alternative ingredients are needed to replace fishmeal for production diets for marine fish.  

Pressurized conditioners offer an alternative preconditioning technology to improve pellet quality, increase capacity and feed conversion and pasteurize feed. 

Nucleotides are basic building blocks of the nucleic acids DNA and RNA, and necessary elements in the their replication during cell division and renewal. 

Soybean meal has the largest market share of all protein meals used in the production of single-stomach animals, and is a major component of aquafeeds. 

The redclaw, an Australian freshwater crayfish, is produced in Mexico using aquafeeds formulated for fish, penaeid shrimp and freshwater prawns.  

Formulated microdiets, which are easier to maintain and have a lower production cost than live prey, offer an alternative food source to rotifers and artemia. 

Creating formulated diets for fish larvae is difficult because estimating nutritional requirements cannot be done using traditional nutritional approaches. 

No official data are available concerning the production of certified organic aquaculture products, but it is primarily from European countries.  

Aquaculture feed manufacturers in the Americas – with the exception of a few countries like Ecuador – have relied on short-term, single-pass conditioners. 

The choice of shrimp feeds or feeding regimes can have a profound effect on the rearing conditions and health of the cultured species. 

The effects of long steam preconditioning times of up to 30 minutes on the water stability of shrimp feeds were evaluated in early research studies. 

The development of technological innovations would improve the economic viability of freshwater prawn culture in the Mississippi Delta. 

The potential for NIR spectroscopy for rapid and accurate prediction of the chemical composition of fishmeal and soybean meal deserves investigation. 

Several tools can help control the density of extruded marine fish feeds, including vented extruder barrels and separate cooking and forming extruders. 

A study by the AKVAFORSK Institute of Aquaculture Research sought to determine if extrusion temperatures negatively affect digestibility of nutrients in aquafeed.