Analysis of Extruded Fish Feed Popularity
At present, fishery has developed rapidly because the floating fish feed extruder was born. Up to now, there has been a marked increase in the use of extruded diets for feeding fish. These diets have superior water stability, better floating properties and higher energy than pelleted diets. And the main effects on fish are: an increase in fish growth and an improvement in feed converison. We will analysis of the raw materials and the feed as follows.
1.Raw Material
The raw materials are very rich, such as soybean, corn , rice bran and so on. What is better, they are very nutritional.
Soybean protein can help balance the nutriment deficiencies of such grain as wheat, which are low in the important amino acids. Soybean meals are available as feedstuffs to prepare fish feed diet for crab that was 25 percent crude protein. Soy flour and grits, made from grinding whole soybeans, are used in the commercial produced extruded or steam pressed pellets to aid in dough conditioning or soy flour may also be prepared by steaming the unextracted, dehulted flakes to remove the bitter flavours, so the fish feed made from it tastes good.
Corn starch is a product used in both animal feed and human feed. Corn starch has the following nutrients which fish is needed in their food such as dextrose, glucose syrups, high-fructose syrup and malto-dextrin.
Oils was developed as a result of increased extraction of lipids from rice bran. Edible oils obtained from rice brain must be treated to inactivate lipase enzymes that will hydrolyse the lipids to form free fatty acids rancid odour which is needed in fish feed. It is said that the properties enable the rice bran to be utilized as an edible grade in a variety of applications as well as fish feed formulation products thus this by –products utilization has the potential for increasing the value added to rice as food ingredient.
In a word, thanks to the fish feed extruder, the fish feed made from the materials taste good and nutritional.
2. Fish Feed
(1)The feed is digestable because the electric heating device improve the feed expansion rate.
(2)The fish fed with the extruded feed are healthy because the salmonellosis and bacterial infections can be killed by the high temperature and high pressure.
From the above, we can see that the fish feed extruder makes a contribution to the fishery. Whilston pellet machinery,as the experienced manufacture of fish feed extruder, will promise you the professional guidance.
