How do you make floating fish feed
As an important factor in large-scale fish farming and aquaculture, the production of fish feed has a great impact on both the growth efficiency and the cost of fish farming. In recent decades, the use of floating fish feed has increased significantly, because it is a high-quality environmental fish feed, with good water stability, good floating, easy digestion, little pollution, zero waste of raw materials, high energy characteristics, has become an irresistible trend in the development of aquaculture feed industry.
Main ingredients of fish feed
Fish feed requires certain nutrients that will help the grower optimize growth and increase the profits of his fish farming business. Here are four categories of nutrients, in order of importance, that are essential in any feed formulation.
- Protein: These nutrients are needed to build body tissue and replace damaged tissue. It contains physiological molecules such as hormones and enzymes. It can be obtained from plants and animals.
- Energy (carbohydrates): This nutrient provides the energy the fish need. Cereal and cassava grains are the main sources of this nutrient.
- Vitamins and minerals: Growth, health and bodily processes are all controlled by these nutrients. For example, organic and inorganic chemicals are found in vitamins and minerals.
- Fats: Fats contain important fatty acids and also enhance energy delivery in the feed.
Machine For Making Fish Feed
Floating fish feed machine is the best choice for homemade fish feed and fish farms. With a floating fish feed extruder, you can use cheap local raw materials to produce high-quality feed and reduce feed costs.
How to Produce Floating Fish Feed
After selecting the right formula, the next key is to master the production process of floating fish feed.
Mixing & grinding: The main raw materials of floating fish feed should be crushed and mixed before being made into pellets, so the production of floating fish feed needs to use a fish feed mixer and a fish feed mill, the purpose is to produce high quality floating fish feed suitable for fish digestion and with good water stability. After weighing the raw materials according to the weight ratio in the formula, the fish farmers grind the raw materials into 60-100 mesh by using the drop type fish feed mill, and then add other ingredients into the fish feed mixer for uniform mixing. Grinding helps increase the exposed surface area of the raw material, improves the uniformity of the mix, and makes the feed more digestible, which is very important for small-eating animals like fish. In addition, the mixed and crushed feed also AIDS in granulation and extrusion.
Pelleting & Extruding: In the extrusion process, the raw material produces heat through the screw, the shear plate and the inner wall of the expansion chamber under the action of mechanical energy. The material is actually fused under high temperature and pressure and extruded from the fish feed extruder. The volume expands due to the sudden decrease of pressure. Customers can choose extruders with different die hole sizes according to their actual needs, because Fan Wei can provide fish feed extruders ranging from 0.9 mm to 12 mm, which is suitable for different growth needs of fish at various growth stages.
Drying & Cooling: When the planktonic fish feed leaves the granulation mold, it must be the granule with high moisture content. In the case of sticky particles, farmers need specialized and improved drying equipment after they are able to make floating feed. After drying and cooling, feed can be stored in a dry ventilated chamber to maintain quality. The use of fish feed dryers/coolers makes feed easier to store, which also makes drying/cooling an important part of feed processing.
Advantages of floating fish feed
Because the extruded floating fish feed can float on the water surface for a long time, the feeding situation of the fish can be observed well after feeding, and it is convenient to adjust the feeding amount according to the feeding situation of the fish. At the same time, the growth and health status of fish on the water surface can be understood more accurately according to the change of fish’s food intake. The farmers can calculate the amount of bait according to the breed, specification, quantity, water temperature, bait casting rate and so on, so as to quickly feed, save a lot of time and improve labor productivity.
Under the processing conditions of high temperature and pressure, starch in the feed is ripened, fat and other more conducive to digestion and absorption, fiber structure and cell wall are destroyed and softened, gossypol in cottonseed meal and anti-trypsin and other harmful substances in soybean, so as to improve the palatability and digestibility of the feed. In addition, due to the physical and chemical changes during the extrusion process, the powder produced by the extrusion feed is generally less than 1%, which directly improves the effective utilization of feed. Under normal conditions, the use of extruded floatation feed for fish can save 5-10% of feed compared to powder or other pellet feed.
The extruded feed of planktonic fish does not remain in the water for long. The floating time of high quality floating fish feed can be up to 12 hours, and it is easy to observe and control. It reduces or avoids the pollution of powder and residual bait to the water body, which is very beneficial to environmental protection and the growth of fish.
In the way of breeding, the extruded feed of planktonic fish has wide applicability. Floating fish feed can be used for pond fish culture, paddy field fish culture, running water fish culture, cage fish culture, factory fish culture, large watertight culture, etc. The use of floating fish feed has more advantages than other kinds of fish feed, especially for the low-density fish culture in mountain ponds, rice fields and large-scale intensive water surface culture.