According to a recent research,aquaculture industry has the highest increasing speed in the world feed industry. Its booming development bring aquatic feed to people’s attention as it plays the significant role in aquatic animals healthy growth.  Among the various types of aquaculture feed, it is the extruded feed that win most popularity due to its obvious advantages such as advanced extruding process, palatable flavor,easy digestion and wide application to aquatic animals. The innovative extruded feed processing technology will largely lower down fishermen cost on aquatic animal feeding which accounts for 80% of their cost,  thus it can bring them greater profit by way of less investment. We will introduce extruded aquatic feed processing in details.

Fish feed refers to all kinds of aquatic animal feed in seawater and fresh water.  The classifications are as follows:
1.1 According to the buoyancy in water,  aquatic feed is categorized into sinking feed,  floating feed,  and slow sinking feed.
1.2 Due to different feeding objects,  aquatic feed is classified into fish feed, shrimp feed, frog feed, etc.

2.1 Aquatic Feed Extrusion Technology
The extrusion process of aquatic feed is essentially a cooking process during which the starch-containing components are decomposed and the proteins are denatured.  Raw materials are strongly impacted by the high speed rotating shaft and fully cooked by the heating system where the temperature in fish feed extruder can reach upto 120-170 C.  Finally,  when the material is extruded through extrusion die,  the pressure is released to normal state suddenly and the pellets are expanded into puffed form.  In addition,  the density and length of extruded pellets can be adjusted according to customers’ requirements.  Extruded feed has various forms:  floating feed to sinking feed.

We have two types of extrusion methods:  wet extrusion and dry extrusion.  The exact difference between them is whether there is steam preconditioning in feed processing stage. Wet type extrusion processing needs a boiler to offer steam for the conditioner so as to ripen the raw material in advance. The output of wet aquatic feed is higher than the dry type feed in the case of same power consumption.  Dry extruders are used in processing low moisture,  highly expanded starch products and dry feed pellets are stable for relatively long periods & convenient for storage. We manufacture extrusion feed pellet machine which can produce both wet and dry aquatic feed.

The advantages of extruded fish feed pellet 
☞Wide adaptability: the capability of an extruder enhances the feed manufacturer’s flexibility to produce fish feed pellets for shrimp, crab, eel, catfish, carp, frogs, etc. as well as process full-fat soybean, dogs and cats feed, pet food, ornamental animal feed and others.
☞High starch gelatinization: feed material goes through the processing of HTST, starch gelatinization degree increase can reach 80-99% for Aquatic animals easily digest.

☞Improved water stability: aquatic feed water stability is an important indicator. Our extruded aquatic feed pellets can soak in the water for more than 12 hours without decomposition for fish bite.

☞Convenient for density control:  it is entirely feasible for an extruder to produce floating feed, sinking feed and slow sinking feed by density control; that is more conducive to different fish species.

☞Fine mechanical properties: puffed fodder has good mechanical performance and less dust, unbreakable. It can reduce feed waste, water and air pollution.

☞Good to aquatic organism health: extrusion cooking provides hygienic feed processing and destroys the pathogens & other most viruses to avoid animal illness.