Aquatic feed is prepared by mixing the required ingredients including proteins (animal and plant), energy substances, salts, vitamins, etc., depending on the type and age of the fish.
This product can be produced in the form of pellets, crumbles, flakes, granules or extrude.
Extrusion technology is currently the best way to produce aquatic feed for dense and ultra-dense systems.
In the extraction process, most of the aquatic diet, including carbohydrates, is gelatinized due to high temperature and pressure, and rubbing and kneading of food, and the digestibility of sugars reaches more than 95%
Also, due to the increased digestibility of food, the volume of waste produced by aquatic animals is significantly reduced
Consumption of extruded feed reduces the consumption of oxygen per unit weight of feed by aquatic
In terms of increasing energy production, the amount of feed consumed is reduced and this will improve the feed conversion ratio
Improving the energy level of food and improving its quality will increase the growth rate and shorten the growth period in the field
So, the advantages of extruded feed can be summarized in the following headings:
1-Increase the growth rate of aquatic animals
2-Improving feed conversion ratio
3-Increasing the resistance of aquatic animals to diseases
4-Reduce waste and excrement in the pool
5-Possibility of more compactness of aquatic animals in the pool due to reduced oxygen demand
6-More economic interest due to increased farm productivity and reduced cost of aquaculture