Fish farming in Bangladesh is playing an important role in the country’s gross national income. Bangladesh is a south Asian country, and there is hardly any region in the country without rivers or any other source of water. In short, Bangladesh is surrounded by rivers and various types of water sources, such as ponds, streams, lakes and so on. The majority of the country’s population is directly or indirectly involved in fish or fish-related businesses. In particular most people in southern Bangladesh are directly involved in commercial or fish-farming related businesses.
 
Fish Feed Making Machine
Fish feed extruder machine is widely used in making both floating fish feed and sinking feed pellets for aquaculture farms and feed plants. Through the fish feed extruder we can use cheap local raw materials to produce high-quality fish feed, which may save feed costs.
 
Floating Fish Feed Extruder Sinking Fish Feed Extruder The fish feed pellet machine belongs to fish feed pelletizing equipment. The fish feed pellet machine uses the feed hammer mill, fish feed extruder machine and other equipments to set up the fish feed production line. The final feed pellet has a unique shape and good taste, high nutrition and smooth texture. Used as feed for fish and shrimp. When extruding pellets, the time of floating on the surface can adjust by the degree of extrusion, which is an ideal choice for small and medium-sized fish farms (catfish, tilapia, shrimp, etc.).
 
Fish Feed Ingredients and Formulation in Feed Making
The main ingredients used for fish feed production are rice bran (20–50% inclusion), maize (5–20% inclusion), soybean meal (10–30% inclusion), mustard oil cake (10–25% inclusion), fish meal (5–15% inclusion) and meat and bone meal (10–20% inclusion).
Rice bran is mainly produced locally, and is derived from rice milling. It accounts for 7–8% of unmilled paddy grain by weight. Three types of rice bran are used: de-oiled rice bran (DORB), grade A rice bran (comprising 85–90% bran and 15–10% husk), and grade B rice bran (comprising 60–50% bran and 40– 50% husk). The protein content of DORB and grade A rice bran is approximately 12–17% and 10–13%, respectively. Only 30% of total rice bran production of Bangladesh is used for commercial animal feed production. Three main factories produce approximately 0.13 million tonnes of DORB per year during production of rice bran oil.
Local production of maize has reached 1.65 million tonnes, of which 90–-95% is used for animal feed production, including 7–10% for fish feed. The market for maize is mainly controlled by the poultry industry.
 
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