company news about How to choose the right fish feed pellet size？

The Difference Between Small and Large Particles

Ornamental fish feeds can be categorized into two types of particle sizes: small and large. Small particles are between 1-2 mm in diameter, while large particles are between 3-4 mm in diameter. The differences between these two types of feed lie primarily in the following areas:

1. Digestibility: Small particles are more digestible than large particles because they are easier for fish to swallow and digest.

2. Distribution Rate: Small particles distribute faster than large particles because they disperse more easily in the water, attracting fish to feed.

3. Nutrient Content: Small and large particles have essentially the same nutritional content, but the nutrients in small particles are more readily absorbed and utilized by fish.

How to choose the right feed particle size

The pellet size of your fish should be determined by the species, size, and mouth shape of your ornamental fish. Different species of ornamental fish have different taste and nutritional requirements for their feed, so you should choose the right feed based on your fish's needs and health.

Of course, you can also produce your own fish pellet feed. A fish meal production line allows you to customize the raw materials and features a high degree of automation, meeting the needs of medium- to large-scale farms. So, what equipment does a fish meal production line include?

Bucket Elevator
Bucket elevator is a continuous conveying machine that uses a series of buckets evenly fixed on an endless traction member to vertically lift materials.

Raw material cleaning system
Cleaning operations are the use of magnets, screens, dust collectors and other equipment and systems to remove these impurities to ensure that the stored grain is of good quality and to protect the machinery during subsequent 5-10t/h fish feed pellet processing steps.

Silo system
To ensure continuous production, large quantities of raw materials such as corn, wheat and soybean meal need to be stored during feed processing. The raw materials of the steel silo are of good quality and easy to operate.

First crushing
Grinding is an operation to reduce the particle size of feed and increase its specific surface area, which can enhance animal digestion, improve feed utilization, and also improve the processing quality and work efficiency of 5-10t/h fish feed factory subsequent process steps such as batching, mixing, and extrusion.

First batching and mixing
The first batching process refers to the combination of bulk dry raw materials and liquid raw materials into a value-added, uniformly proportioned mixture. The first mixing is a critical process in compound feed production.
It combines ingredients with unique properties into formulated rations under the action of subsequent processing equipment that meets all the nutritional needs of the animal and adds value to the blended commodity.

Second crushing section
In order to meet the production process requirements of extruded aquatic feed, the raw materials need to be finely or ultrafinely pulverized to meet the requirements of processing finer-grained pellets to improve pellet durability and increase extruding/pelletizing capacity.

Second batching and mixing
The second batching process in 8-10t/h fish feed pellet plant refers to the scaling, addition and mixing of dry and liquid trace elements and premixes to form a complete feed mix, a formula ration.
Secondary mixing is a key link in compound feed production. Under the influence of external forces, ingredients with unique properties are blended together into formula diets to meet animal nutritional needs and increase the value of the blended product.

Extrusion system
Puffing is the process by which moist, swellable starch or protein materials are plasticized in a tube by a combination of moisture, pressure, heat and 5-10t/h fish feed machinery.
In the submerged feed process, the processed feed pellets enter the pelleting equipment and are compressed into pellets by rollers and molds in the pelletizing chamber. It is also possible to process fish feed with a floating fish feed extruder.

Screening system
After cooling and drying, the whole extruded fish feed pellet is sieved to remove fines and spills and bring the pellets to acceptable size.

Liquid Dosing and Spraying Systems
Spraying is an industrial process in 5-10t/h fish feed pellet plant. After the pellets have been dried and screened, and before the pellets are cooled, apply liquids or powders, such as oils/fats, pigments, flavors, functional modifiers or vitamins, to the surface of the extruded pellets to improve the taste and acceptability of the pellets .

Cooling system
In the feed extrusion process, the cooling of feed pellets is essential. When leaving the twin screw extruder, the extruded feed pellets are very hot, soft and rich in moisture, the cooling process cools them down to 3℃-5℃ slightly above room temperature and reduces their moisture content to a safe standard (≤12.5%), for easy transportation and storage.

Packaging and Palletizing Systems
The packing operation begins when the finished feed enters the supply bin above the packer and ends when the bagged feed is placed into the warehouse. The procedure involves weighing each bag of feed, placing the weights into the bag, closing the bag mouth, labeling the bag, coding the bag, palletizing the bag, and moving the bag to warehouse storage.

For more information on process design, equipment layout, plant construction plan, single machine equipment quotation, turnkey quotation, etc., please feel free to contact us.

Qualifications and Honors