There are many pelleting and extrusion options in aquafeed production and all these choice will have an effect on the end product. Doris Du, Allance Machinery, China, gives her insight into the pelleting process.
Aquaculture is a developing activity around the world. As the industry grows, so does the aquafeed market. Aquafeeds are comprised of a number of ingredients that are mixed in various proportions to complement one another to form a nutritionally complete compound diet. According to the physical characteristics, they can be divided into powder, particle, pelleted and extrusion aquafeed. They can also be divided into sinking, slow sinking and floating aquafeed according to their buoyancy. On the basis of aquafeed energy, they can be divided into low energy, medium energy and high-energy aquafeeds.
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| Pelleting and extrusion in aquafeed technology |