Reminder on raising conventional fish

In recent years, the market price of traditional fish has remained weak, often approaching production costs, causing many fish farmers to suffer losses unintentionally. To address this issue, the following practical suggestions are proposed: First, adopt pollution-free farming methods. With the growing emphasis on eco-friendly agricultural products, the demand for pollution-free aquatic products is increasing, making it a valuable and sustainable approach. Second, implement proper stocking strategies. In typical fish ponds, wild fish often compete with the main species for food and oxygen. By introducing high-value species like blackfish into intensive culture systems, wild fish can be controlled, improving overall profitability. For example, stocking 30 blackfish per mu (approximately 0.067 hectares) can yield around 40–50 kg per mu at a price of ¥12/kg, generating an additional income of about ¥500 per mu. Third, focus on daily management. As the saying goes, “Three points of raising, seven points of management.” Daily checks in the morning, afternoon, and evening are essential to monitor fish behavior and feeding patterns. During hot weather, rainy days, or low-pressure periods, oxygenation should be increased to prevent fish from floating or dying. As temperatures rise, water quality changes rapidly, so regular water adjustments are necessary. Every 10–15 days, a small amount of fresh water should be added, and pond equipment, tools, and water should be disinfected regularly. Fourth, manage the market balance. From May to June each year, the fishing season begins, allowing for better pricing and reducing fish density in ponds, which helps maintain healthy growth conditions. Fifth, avoid blindly following trends. When choosing species to raise, don’t just go after popular ones. Instead, assess market demand and pond structure before deciding on the cultured species. Sixth, embrace new technologies. Prioritize aquaculture varieties with strong market demand and high technological value, such as high-yield stingray ponds or immunization techniques for grass carp. Seventh, cultivate aquatic plants. In intensive pond systems, feed accounts for about 80% of total costs. By incorporating plant-based feeds for herbivorous fish, feed costs can be reduced while improving fish growth and feeding efficiency. Eighth, practice large-scale stocking. For certain species like grass carp, head gudgeon, or squid, larger fish can be stocked to increase pond output and improve economic returns. Ninth, focus on disease prevention. Fish diseases are often hard to detect early, so regular preventive measures are crucial. Proactive care can avoid costly losses and ensure healthier fish populations. Tenth, choose quality feed carefully. Using low-quality feed may lead to poor fish health and lower market value, even if it seems cost-effective at first. By implementing these strategies, fish farmers can improve their productivity, reduce risks, and enhance profitability in a challenging market environment.

Black And White Ultrasonic Diagnostic Equipment

It can be configured with a variety of variable-frequency probes to meet various clinical needs; dual probe interface, the probe can be freely switched; it adopts a number of international advanced digital image processing technology and software technology, such as dynamic broadband low-noise preamplification and dual-echo processing technology, multi-point dynamic focusing, dynamic variable aperture, dynamic filtering, gain compensation (TGC), frame correlation, DSC transform interpolation, etc., with a clear and delicate image. It is suitable for diagnosis and examination of abdomen, gynaecology, obstetrics, urology, blood vessels, heart, small organs and superficial parts.

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