Japanese Technology for Floating Fish Feed Manufacturing

 The environmentally friendly extrusion technique is critical for manufacturing high-quality fish feed without sacrificing vital ingredients. To manufacture the best fish feed possible, you can precisely regulate the cooking and shaping process with the help of our extrusion technologies.

The main objective is to produce a balanced diet that maximizes feed efficiency and gives your fish a nutritious and simple-to-digest diet. The feed must also be able to resist storage and transportation while maintaining its shape and texture in the water.

Fish feed manufacturing

Efficacy at every level of production

To create a fish feed that is great for growth and survival and comprises krill-derived protein as an active component, which has a minimal impact on the elution of water-soluble nutrients when added to water. A semi-dried product with virtually no space between the heated krill meat and shell is used as a feed ingredient for fish husbandry.

An object that has been compressed-molded or heated from raw or frozen krill that has a volume of 95 to 25 percent and a moisture content of 15 to 60 percent by weight when compared to its unpressurized state, The particle size ranges from 1 to 30 mm. The chosen product is frozen. These raw materials can be used to create fish farming feed. In addition, you can use flour, starch, water, and oil. It should have between 15 and 40 percent by weight of water, and between 5 and 30 percent by weight of oil.

Additionally, the cultivation of fisheries has taken on increasing importance in Japan, and along with it, seedling production has developed in a surprising way, making it feasible to cultivate a variety of fish species. Traditionally, biological feeds like rotifers and artemia have been utilized as feeds to produce seedlings. However, it has been discovered that a significant portion of larval fatalities is caused by nutrient inadequacies.

Universities and businesses have worked on developing particulate seedling feed, and by combining it with biological feed, seedling production technology has advanced. Traditional particle feeds are made using fluid bed granulation or freeze-drying. The earlier production method, which includes kneading, freeze-drying, pulverizing, and classification, takes a lot of time and work.

With the latter, the powder is mixed with a fluidized bed granulator and then granulated while a binding agent is dispersed from a nozzle to tie the powder together. The cost of manufacturing is also extremely significant.

Technological Production In Floating Fish Feed 

After studying the fundamentals of fish nutrition using the Tilapia fish as an example species, you should be prepared to investigate the many procedures that go into the making of fish feed.

The procedures you will learn are as follows

  • The preparation of ingredients
  • Ingredient grinding
  • Components being combined
  • Micro components mixing \sconditioning
  • Pelleting \sExtrusion
  • Drying \sPackaging

Make sure the components you'll be using to generate feed are clean, hygienic, and safe to use before we start delving into the specifics of the many phases of producing fish food. It is crucial that you check all of the items you plan to use for obvious problems like yeast or molding.

They should be past the point of use. It is wise to thoroughly assess them if they have been in storage for a while. Always remember to look for any expiration dates on the products to learn more about quality issues. Before moving on to the next steps, you should, for instance, pay attention to the moisture content of the materials because it could later create issues, such as during grinding and mixing.

It is time to weigh the ingredients now that you are confident in their quality and pleased with their general state.

Fish feed manufacturing

Fish feed ingredients are weighed

Measure each component that will be used in your formulation or recipe one at a time, then write a note of the ingredients' names and masses.

Ingredient Grinding

Normally, you might have to grind every item by hand if you are preparing feed on a small scale. It might be possible to organize the previously ground materials in some circumstances. Make certain that all the components are uniformly ground. For effective mixing in the following stage, grind both components to the same particle size, such as 0.5 to 1 micron, if you are utilizing wheat and maize together in a formulation.

A hammer mill or a roller mill is used for milling on an industrial basis. The next step is to mix the ingredients and create a mixture that we'll call feed mix once each component has been ground and placed in its bag.

Components Being Combined

The amount of time it takes to mix the ingredients will vary depending on the type of technology you are using. When mixing on a small scale using a kitchen mixer, be sure to thoroughly combine the ingredients, perhaps for 10-15 minutes. Again, having an even and homogeneous mixture should be the aim.

On a Japanese industrial scale, mixing takes substantially less time and produces more homogeneous results when paddle mixers are employed. If you're planning to prepare the feed batch for tilapia fish on a small scale, add oil to the mixing process. Make sure the oil is equally distributed throughout the feed mix by carefully mixing it in.

After the oil was added, the color of the feed mixture darkened. You can tell if the mixing oil has been uninformed or not by the spread of the general color shift.

Premix is the term for a mixture of substances in modest amounts.

Minerals, vitamins, fiber, and amino acids

In order to ensure optimum mixing and availability in your main feed mix, add 10% more of these micro components.


In the process of conditioning, you increase the homogeneity of your feed mix by using high temperatures and moisture. The apparatus known as the Conditioner performs this procedure.

The feed mixture is subjected to high temperatures, such as those between 70 and 90 degrees Celsius. Through this temperature treatment, the bacteria that could be present in your feed mix are largely eradicated successfully. The feed mixture receives a stream of moisture addition. To put it another way, hot steam is supplied to the feed mixture within the purifier.


In this technique, you will process the feed mixture and put it through the extruder to make pellets. If you don't have access to conditioning technology, you can put the feed mixture for extrusion with 10 to 20 percent water added to it. As a result, the mixture will be easier to homogenize and form into sturdy pellets. But keep in mind to add the water gradually and in little amounts.

Use the correct size of dye, which frequently comes with the extrusion machines, to ensure that the proper size of pellet is created. Knowing the size of the fish you are feeding is important since it will affect how quickly the pellets are sliced while you are creating the feed.

Industrial Extruder

Extrusion technology has progressed significantly over time. High temperature and pressure are typically utilized in industrial extruders to ensure that high-quality feed is generated. Of course, the expense of this technology is enormous. Your fish feed is currently prepared. Please be patient though; we're not done yet. Before giving the feed to our fish, it must be dried.

Fish Feed Is Dried

For six to twelve hours, raise the heat setting to 55 degrees Celsius, and monitor the moisture content every three hours. If you are fortunate enough to have access to sunlight, use it to dry the tiny amount of your meal. Your fish may not adequately consume the feed if it is too dry, as too much dry feed will decrease the feed's digestion. A greater moisture level will also lead to worse feed quality.

Fish feed manufacturing

Vibration Coating

Making feed for fish like tilapia, however, some fish species, like salmon and trout, love to have lots of oils in their feed. Pellets are unique because they contain significantly more oil. However, you might wonder how oil for them can be in such a small pellet. You might be surprised to learn that the pellets appear to be little.

Can absorb up to 30% of the oil, and this is accomplished through a technique known as vacuum coating. The pellets are injected with oil. As you have learned in the preceding steps, extrusion is used to create this form of pelle with many pores in them. Simply said, the extruded pellet can absorb a lot of oil and is shaped like a sponge with several holes, allowing salmon fish to eat their meal as well.

Feed Packaging and Storage

After completing all of the stages required to produce fish feed, we store the produced feed. Depending on your resources, you can store the feed in dry polythene or paper bags. The feed is sold in packages of 25 to 500 kilograms.

To prevent fungus, store the feed in a place that is less humid, dryer, and cooler. Rats enjoy eating the feed just as much as fish do.

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