1, bait feeding. The main kinds of artificial feeding bait are rice bran, wheat bran, vegetable cake, bean dregs and animal leftovers. Water temperature 15? Do not feed below c, water temperature is 20? C-28 * C is most suitable for feeding and growth, and it is fed in large quantities. Feeding once a day or once every other day, in the morning or evening. Feeding bait should be sprinkled all over some fixed feeding grounds.
2. Topdressing. The color of snail water is preferably brownish or light green, the transparency is 20 cm-30 cm, and the color of water changes day by day, reaching the same level as that of fish culture water. Fat, alive, tender and cool? Requirements. According to the fertility of water, it is determined whether to apply fertilizer or how much to apply fertilizer. The variety of topdressing can be fermented manure or chemical fertilizer. No matter what kind of fertilizer is applied, a small number of times should be taken to avoid excessive deterioration of water quality. Generally, the amount of topdressing manure is 100 kg each time. 200 kg, or urea 1 kg? Two kilos.
3. Turn on the aerator and change the water. The ability of snail to tolerate hypoxia is not strong, and the dissolved oxygen in water should be kept above 4 mg/L. It is found that the fish's oxygen-deficient floating head is not sensitive to disturbance, or the snail crawls to the surface of the water in batches, which indicates that the water body is seriously oxygen-deficient, so it is necessary to start the aerator and add new water to rescue it in time, otherwise it will cause the snail to die in batches. Therefore, it is necessary to observe the water quality frequently at ordinary times, start the aerator scientifically in time and inject new water in time to prevent the water quality from deterioration, aging and hypoxia, and keep the water body rich in dissolved oxygen.
4. prevent escape. River snails often escape from water inlets and outlets, caves, overflowing ponds and other places, so they should be inspected frequently, especially when it rains heavily.
5. Observe the growth and reproduction of snail. In the process of breeding, we should check the growth of snails at any time. If the growth rate is slow, we should find out the reasons from the methods, quality, quantity, water environment, diseases and other aspects in time, and improve at the same time. When snails are found to be born in the pond, some bait with higher nutritional value should be added for feeding.
6. Overwintering management. In addition to strengthening the cultivation before winter to make the snail healthy, it is necessary to deepen the heat preservation of the pool water after winter, pay attention to the water quality and prevent hypoxia.