{"id":1328,"date":"2019-06-25T13:00:08","date_gmt":"2019-06-25T11:00:08","guid":{"rendered":"https:\/\/derwent.es\/pellets-versus-extruded-feed\/"},"modified":"2020-04-28T12:32:46","modified_gmt":"2020-04-28T10:32:46","slug":"pellets-versus-extruded-feed","status":"publish","type":"post","link":"https:\/\/derwent.es\/en\/pellets-versus-extruded-feed\/","title":{"rendered":"Pellets versus extruded feed"},"content":{"rendered":"\n
In early aquaculture, moist natural products such as low-value fish or scraps from slaughterhouses and fisheries were used as food sources. The preparation of this type of feed did not require very advanced technology aside from mincers, mixers, etc.<\/p>\n\n\n\n
Today, <\/span>aquaculture accounts for 50% of global fish consumption, and the forecasts project an increase in the coming years.<\/b> This rapid growth has also caused <\/span>a rapid evolution in the technology used to manufacture <\/b> aquaculture feed.<\/span><\/p>\n\n\n\n Specific aquaculture feeds have unique characteristics that differentiate them from other types of animal feed. They have very high protein and fat content, and at the same time, they require certain characteristics, such as floatability and stability in water.<\/p>\n\n\n\n Today, dry feed is widely used because it is easy to acquire, transport, store and distribute, and due to the good results obtained in terms of growth and conversion ratio.<\/p>\n\n\n\n Today, <\/span>the two most widely used technologies for the manufacture of aquaculture feed are pelletisation and extrusion.<\/b> Feed produced with these processes is denser, has lower moisture content and allows better preservation. One of the main differences between pelleted and extruded feed is that, whereas pellets sink, the buoyancy of the extruded feed can be controlled during the manufacturing process. However, extrusion has other advantages that we will now examine.<\/span><\/p>\n\n\n\n Both manufacturing processes have common phases, but the pelletisation or extrusion phase is the one that makes the difference in the final product.<\/p>\n\n\n\n