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I. Core Principles of Extrusion Technology: The Foundation for Improving Fish Feed Quality
The core role of extrusion technology in floating fish feed extruder machines is essentially to achieve physical and chemical modification of feed ingredients through the synergistic effect of high temperature, high pressure, and shear force. Inside the extruder barrel, the screw rotates at high speed, propelling the raw material forward. Simultaneously, a heating device raises the barrel temperature (typically 80-140℃). Under high temperature and high pressure, the raw material gelatinizes and denatures, then is extruded through a die, rapidly depressurized, and cooled to form uniform fish feed pellets. This process differs from traditional grinding and mixing processes, breaking down anti-nutritional factors in the raw materials, making nutrients easier for fish to absorb, and simultaneously creating stable pellet shapes, laying the foundation for fish feed quality. Compared to ordinary production processes, extrusion technology can increase feed gelatinization by 30%-50%, significantly outperforming traditional processing methods. This is the key reason why it has become a core technology of high-end floating fish feed pellet extruder machines.
II. Nutrient Retention and Activation: The Optimizing Effect of Extrusion Technology on Fish Feed Nutrition
The growth rate and health of fish directly depend on the effective absorption of nutrients in the feed. Extrusion technology, through precise control of temperature, pressure, and shearing time in floating fish feed pellet making machines, maximizes the retention of core nutrients such as protein, vitamins, and minerals in raw materials while also activating these nutrients and improving absorption efficiency. For example, in the processing of protein raw materials such as fishmeal and soybean meal, the high temperature and pressure during extrusion can cause moderate denaturation of protein molecules, breaking down their spatial structure and facilitating their decomposition by fish digestive enzymes, thus increasing protein utilization by 15%-20%. Simultaneously, extrusion technology avoids vitamin loss caused by overheating; through optimized cooling processes, vitamin retention rates are increased to over 85%, far exceeding the approximately 60% of traditional drying processes. Furthermore, the extrusion process evenly coats dietary fiber, minerals, and other nutrients within the pellets, preventing nutrient loss during aquaculture and ensuring a more balanced nutritional intake for fish.
III. Pellet Forming and Palatability: Extrusion Technology Enhances the User Experience of Fish Feed
The pellet shape, hardness, and water stability of fish feed directly affect fish's feeding willingness and feed utilization rate. Extrusion technology, through the precise design and pressure adjustment of the die head in a small fish food pellet making machine, can produce fish feed pellets of different sizes and shapes, suitable for different sizes and species of fish (e.g., 0.5mm pellets for fry, and 2-5mm pellets for adult fish). Simultaneously, the gelatinization of the raw materials during extrusion creates a colloidal structure that controls the pellet hardness within a suitable range (Shore hardness 30-50), facilitating chewing and feeding by fish while preventing breakage due to excessive softness, thus reducing feed waste. More importantly, extruded fish feed pellets exhibit extremely high water stability, typically remaining intact for 2-4 hours, far exceeding the less than 1 hour of traditional pelleted feed. This effectively reduces water pollution while ensuring sufficient time for fish to feed, increasing feed utilization by 10%-15%. Furthermore, the natural aroma produced during extrusion significantly enhances the palatability of the fish feed, stimulating feeding and reducing refusal to eat.
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1. What is the price of the small fish feed making machine?
The price ranges from approximately $1,500-$55,000
2. Do you provide maintenance services for your customers?
Yes, we offer comprehensive after-sales maintenance services to our customers.
If you would like to learn more about MIKIM machinery, please contact us. We offer one-stop service and welcome your inquiries!!!