company news about Fish Feed Pellet Machine Products vs Traditional Feed

The core differences in water stability lie in water resistance and waste rate. Traditional powdered feed dissolves and crumbles within seconds of being introduced into water, resulting in the loss of most nutrients and a waste rate as high as 20%-30%. Furthermore, the dissolved organic matter leads to increased ammonia nitrogen levels, water quality deterioration, and increased risk of fish diseases. Pellets produced by wet floating fish feed machines have a compact physical structure and significantly improved water resistance: sinking feed produced by ordinary ring die pellet mills can withstand water for 4-6 hours; while pellets produced by twin-screw extruders, through the gelatinized starch structure, can withstand water for 8-12 hours, with floating feed achieving a buoyancy rate of over 95%, remaining on the surface for more than 6 hours without crumbling. For example, in grass carp farming, the feed waste rate using extruded sinking feed can be reduced to below 5%, far lower than traditional powdered feed, while also reducing water purification costs.

Differences in formability and palatability. Traditional feeds lack a fixed form; powdery feed is prone to flying, polluting air and water during feeding, and fish need to frequently swallow powder, resulting in poor palatability and low feeding efficiency. Paste-like feed is prone to clumping and spoilage after feeding, affecting fish feeding. The wet fish feed pellet processing machine produces pellets whose particle size (1-5mm) and shape (cylindrical, flat round) can be adjusted according to the needs of fish, adapting to the feeding habits of different stages of fish farming, including fry, juveniles, and adults. Extruded pellets, through high-temperature extrusion, form a porous and loose structure with moderate hardness (2-5kg), avoiding damage to the fish's mouth while meeting their chewing needs, significantly improving palatability. Simultaneously, precise feeding of pellets reduces feed flying and clumping, maintains a clean farming environment, and enhances fish feeding activity.

The extruder's optimization mechanism for physical properties. The single-screw fish feed making machine utilizes a core process of "extrusion-high temperature-decompression" to create superior physical properties in its pellets: The raw materials are forcibly compressed by the screw within the extrusion chamber, forming a compact basic structure; high temperature gelatinizes the starch, forming a sticky substance that tightly binds the raw material pellets together, improving formability and water resistance; instantaneous decompression creates a porous structure within the pellets, optimizing hardness and palatability. Furthermore, the extruder can flexibly control the density and porosity of the pellets by adjusting parameters such as screw speed and die orifice diameter, producing different types of pellets, including buoyant, sinking, and semi-buoyant types, suitable for fish with different feeding habits, such as bass, tilapia (mid-to-upper-level fish), grass carp, and common carp (bottom-dwelling fish). Traditional feeds cannot achieve this multi-functional adaptability.

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