The Release and Management of Tilapia Seedlings in Spring
The one-year plan is in the spring. After mid-March, the temperature and water temperature in South China have begun to gradually recover and stabilize. The majority of farmers are in the stage of preparing tilapia. Based on years of practice and conclusions, the author discusses the following aspects of the launch and management of Tilapia seedlings in spring. First, investment seedling matters needing attention Before the vote, we must do a good job in related preparations. After the ponds are cleaned up, it is best to dry the pond for a few days and use quicklime to disinfect and sterilize. When diverting water to the pond, pay attention to the use of dense-eye screens or net cages to block the inflow of wild fish and other rubbish from the outside; follow the "Shallow water investment The principle of "deepwater growth" is that 80cm~100cm of water is generally used to seed the seedlings, and the water depth is gradually increased; the air temperature meter and the water temperature meter are prepared, and the temperature and water temperature are often measured. When the weather is stable and the water temperature rises above 20°C, and The seedlings will only be released when they are stable or rising; 3 to 5 days before seedling, the water body will be killed and sterilized once, and a small amount of fry will be selected after the disappearance of efficacy to test the water. After confirming safety, it can be launched as planned. . Selection of tilapia seedlings: According to different breeding environment and breeding mode, a reasonable choice of tilapia strains suitable for breeding (such as Onyx, Gifford, etc.) should be selected; tilapia produced in a regular seedlings site and stable in quality should be selected. The seedlings are placed; they are good at observing the fry, the fry are robust, free of mechanical damage, and swim quickly, and the preferred healthy fry can be quickly rushed in the same direction after being gently stirred in the pot. Try to avoid mechanical damage during operation, and do sterilization and disinfection work during packaging and transportation. After the seedlings reach the pond, pay attention to the temperature and then put them into the pond to avoid stress. Second, breeding management advice 1, often sampling, pay attention to the killing of insect pests such as trichomonads, slugs and third-generation insects, to kill insects first, after the principle of sterilization, to avoid the breeding of insect pests and water mold, invade tilapia seedlings. 2, pay attention to water quality regulation, maintain water quality "cool, tender, slippery." The use of quicklime or "enzyme bacteria" microbial preparations on the water quality regulation and maintenance; pay attention to the detection of water in the pH value, nitrite and ammonia nitrogen content, timely degradation, regulation; reasonable replenishment of base fertilizer, balance of beneficial algae in the water and The proliferation of fungi; as the fry grow, gradually inject new water. Feeding is properly conducted to ensure the healthy growth of fry and improve the survival rate of seedlings. At the fry stage, high-protein, high-quality powdered feed was selected as the main bait; on a small and multi-meal basis, timing, quality, and quantitative proportioning were used for feeding; general fry stage should select a longer-distance food location. Ensure that the fish seedlings are evenly fed and grow at an even rate; timely, appropriately adding antibacterial, hepatoprotective and health-care drugs to the feed to further improve the disease resistance and immunity of the fry. Pay attention to the elimination and cleanup of snakes, birds, and frogs and other organisms to avoid invading the tilapia seedlings and reduce the loss of seed. Pay close attention to the weather conditions, and do a good job in relevant aquaculture management according to the actual situation. Cardiovascular Drape,Sterile Cardiovascular Drape,Surgical Cardiovascular Drape,Disposable Cardiovascular Drape Xinxiang Huaxi Sanitary Materials Co., Ltd. , https://www.huaximedical.com