The core differences in aquaculture efficiency lie in growth rate and farming cycle. Traditional feeds have low nutrient absorption efficiency and poor palatability, resulting in slow growth and poor uniformity in fish after consumption, leading to a long farming cycle. For example, grass carp farming using traditional powdered feed takes 12-15 months to grow from fry to adult fish (around 1kg). However, using pelleted feed produced by a twin screw pet pellet making machine, due to its high nutrient absorption efficiency and good palatability, increases the fish's feed intake rate to over 95%, accelerates growth rate by 15%-20%, and shortens the farming cycle to 10-12 months, allowing for market entry 2-3 months earlier. Furthermore, extruded pelleted feed provides balanced nutrition, reduces individual differences in fish, results in more uniform adult fish size, and higher commercial value. In addition, pelleted feed is convenient to feed, enabling automated feeding and reducing manual feeding time. Compared to manual spreading of traditional feed, feeding efficiency is increased by over 60%, making it suitable for large-scale aquaculture.
Differences in aquaculture cost control lie in feed waste and overall costs. Traditional feed has a waste rate as high as 20%-30%, and requires more manpower for feeding and water purification, resulting in higher overall costs. However, the pelleted feed produced by the Twin Screw Pet Feed Extruder Machine can control the waste rate to below 5%, reducing feed costs by 15%-20%. Taking grass carp farming as an example, the feed conversion ratio (feed amount required per kg of fish weight gain) using traditional feed is 2.5-3.0, while the feed conversion ratio using extruded pelleted feed can be reduced to 1.8-2.2, saving more than 3,000 yuan in feed costs per acre. At the same time, pelleted feed reduces water pollution and lowers costs for water purifiers and aerators; the shorter farming cycle also reduces fixed costs such as fish fry, medicine, and labor, resulting in an overall cost reduction of more than 25%.
The cost and efficiency optimization logic of extruded pelleted feed. While the initial investment in pelleted feed produced by the Twin Screw Fish Feed Making Machine is higher than that of traditional feed processing, its long-term benefits for aquaculture are significant. Firstly, extruded feed improves raw material utilization, reduces the amount of expensive raw materials (such as fishmeal), and allows the use of low-cost industrial byproducts (such as brewer's grains) to replace some soybean meal, further reducing raw material costs. Secondly, extruded feed reduces the incidence of fish diseases, lowers drug costs, and simultaneously improves the survival rate of adult fish (by 10%-15%). Furthermore, large-scale extrusion units can achieve automated and continuous production, significantly reducing labor costs and making them suitable for medium to large-scale aquaculture operations. Compared to the manual processing of traditional feed, the cost advantages of large-scale aquaculture are even more pronounced.
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