博文

目前显示的是 五月, 2017的博文

Processing and Application of Floating and Sinking Fish Feed

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With the further development of fish farming industry, extruded fish feeds have obtained more and more wide applications in virtue of unique advantages including high nutrient, good palatability, strong digestibility and so on. As a new technology to produce feed, extrusion processing means that in the environment of high temperature(110-200°C), high pressure(25-100kg/cm2) and high water content(10%-20%, even 30%), fish feed stuffs mixture, through heating tempering, deep mixing and particles formation, would puff and afterwards shape into extruded feed when out of fish feed extruder machine . On the basis of density variation and puffing degree, extruded fish feed can be segmented into floating fish feed and sinking fish feed. Currently, the floating feed is the most widely used extruded feed in fish farming, and it has relatively mature technology. That is, floating extruded feed pellets are both produced through modulator for heating and modulation, via continuous mixing proce

How to Lower the Water Quality Pollution from Fish Feed

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Currently, the intensive aquaculture industry has two obvious characteristics: high-density releasing fingerlings and feeding fish with a large quantity of artificial formula feed. As is well known, artificial compound aqua feed is the primary nutritional source of intensive aquaculture, however, the heavy use of manufactured fish feed is also one of main reasons that cause the pollution of aquatic water. In order to figure out the pollution problem of feed, people must control the source of pollution from a nutritional point of view, aiming at achieving the goal of green aquaculture.