A study was conducted using a Twin-Screw Extruder equipped with Specific Mechanical Energy (SME) and Density Control valves, to determine the effect of SME on the water stability of shrimp feeds. Further research is needed to evaluate the performance.
Extrusion processing can be a better alternative to produce high quality-low- polluting shrimp feeds. Extruded pellets with high water stability can be produced by controlling the Specific Mechanical Energy (SME) and without the inclusion of artificial binders. New extruders are
Extrusion manufacturing of aquafeeds has recently seen advances in several areas. The development of new die technology has multiplied hourly output.
The authors designed changes for single- and twin-screw extruders that streamlined the extrusion process to achieve higher output rates for small-diameter aquafeeds.
Shrimp feeds manufactured through the extrusion process can be produced with target quality attributes in a shorter time, thus improving feed production efficiencies.
In the aquaculture industry, extruders have been used to produce a great variety of products, but today most of these feeds fall into the sinking or floating categories.
Depending on the extrusion processing conditions and ingredients used, different products such as floating or sinking feed can be produced.
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.