Biochemical industry Shandong YingLang Chemical Co.,Ltd , https://www.sdylhgtrade.com
Key issues for aquaculture management after flood season
After the flood season, it's crucial to promptly repair production facilities like ponds, fences, and machinery. Conduct a thorough inspection of fish ponds using clear water, nets, or bait to assess the remaining stock of cultured aquatic species. Accurately calculate the number of fish, shrimp, and other organisms in the water and implement corrective measures to minimize losses. Effective aquaculture management requires attention to several key tasks.
First, ensure adequate feeding. During July, August, and September, high water temperatures boost the metabolism of aquatic species, making it a critical growth period. Choose high-quality feeds tailored to the specific needs of each species. For routine fish, use full-nutrient compound feed. For South American white shrimp, combine fine feed with appropriate baits. Crabs should be fed a mix of quail, eggs, and green fodder. Oysters, clams, black peony, and amberjack benefit from small fish, shrimp, snails, and animal by-products. Feeding should follow the principles of timing, quality, location, and quantity to ensure all animals eat enough, grow healthily, and avoid waste. Never feed spoiled or deteriorated food, as it can harm aquatic life. Also, manage wild fish populations to prevent overcompetition.
Second, maintain optimal water quality. Use aerators and oxygenating agents to keep dissolved oxygen levels above 3 mg/L at all times. Regularly apply water quality enhancers to maintain a pH between 6.5 and 8.5, with ammonia nitrogen below 0.02 mg/L, nitrite under 0.20 mg/L, and hydrogen sulfide below 0.1 mg/L. Implement practices such as water exchange, planting aquatic vegetation, and introducing snails to balance the ecosystem. Regularly add beneficial bacteria like photosynthetic bacteria, probiotics, and EM bacteria to enhance the biological environment and promote a healthier aquatic system.
Third, focus on disease prevention. Regular pond inspections help monitor feeding behavior, growth, and activity of aquatic species. If any abnormalities are detected, take immediate action. Select nutritious, palatable feeds and adjust feeding amounts based on water temperature, weather, and environmental conditions. This ensures efficient feeding, reduces waste, and supports better immunity. Disinfect seedlings, tools, and feed to prevent contamination. Implement regular prophylactic treatments to stop diseases before they occur. Maintain cleanliness and hygiene, address issues quickly, and use methods like catching, scaring, poisoning, and trapping to control predators such as birds, snakes, frogs, mice, and crawfish.
Fourth, plan for timely sales. From early to late July, species like carp, clams, grass carp, and bonito can be harvested for the market. Fresh shrimp can be sold regularly, while crabs can be marketed as "yellow crabs" starting in August. Special species such as loach, yellow peony, black peony, and soft-shell turtles should be sold based on market demand and breeding density. Timely harvesting not only boosts economic returns but also promotes a healthy cycle of capital flow, improves feed efficiency, and enhances overall safety. It helps avoid price drops caused by oversupply and ensures a more stable market presence.