One of the key advantages of dry dog food making machines is their significantly improved storage stability and extended shelf life. After extrusion, the moisture content of the feed is reduced to 12%-15%, and the moisture in the raw materials evaporates rapidly at high temperatures. This results in a stable internal structure of the feed pellets, making them less prone to moisture absorption and mold growth. Simultaneously, the high-temperature sterilization during extrusion kills harmful microorganisms in the raw materials, reducing the risk of spoilage during storage. Long-term storage is possible without the need for additional chemical preservatives. For example, fish feed made in a mini home extruder can have a shelf life of 3-6 months under dry and sealed conditions, while unextruded homemade feed typically has a shelf life of less than one month and is prone to mold growth and waste. For users engaged in mass production, extended shelf life reduces feed turnover pressure and avoids economic losses due to improper storage.
Reducing pollution to the aquaculture environment is a core environmental advantage of pet food extrusion equipment machines. On one hand, extruded feed pellets are highly water-resistant and do not easily disintegrate in water, reducing feed residue in the water. Taking fish feed as an example, traditional non-expanded feed dissolves and disperses quickly in water, wasting raw materials and leading to increased levels of ammonia nitrogen and phosphorus, causing water quality deterioration. Extruded feed, on the other hand, can withstand water for 3-5 hours, allowing fish to fully consume it and significantly reducing feed residue, thus minimizing water pollution and lowering water quality management costs. Furthermore, extruded feed has a high digestibility and absorption rate, reducing the amount of manure produced by farmed animals, and the manure contains less nutrient residue, further reducing manure pollution and creating a healthier aquaculture ecosystem.
In addition, the pet food extrusion machine itself is relatively environmentally friendly. Its production process produces no waste gas or wastewater, only a small amount of dust, which can be treated with simple dust removal devices. Compared to the pollution problems caused by cooking waste gas and wastewater in traditional feed processing methods, extrusion machines better meet the requirements of modern environmentally friendly production. For home users, using a mini extruder to make their own feed will not pollute the home environment; for large-scale production users, choosing an environmentally friendly extruder can better meet environmental policy requirements and achieve green farming and sustainable development.
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