Snail farms should choose places with sufficient water, good water quality, humus soil and convenient transportation. Better have running water.
Construction of aquaculture pond. The specifications of snail ponds are generally1.5-1.6m wide and10-15m long, and the topography may also prevail. Make a ridge around the pool, and the height of the ridge is about 50 cm. Water inlets and outlets are set at both ends of the pool water, and blocking nets are installed to prevent snails from escaping. At the same time, planting aquatic plants such as Zizania latifolia in the middle of the culture pond can not only improve the land yield, but also create a good ecological environment for the growth of snails.
2. Stocking quantity and feeding management
(1) The stocking density of snails is generally 100- 120 per square meter, and at the same time, about 5 species of silver carp and bighead carp are interplanted per square meter for main culture. The stocking time of snails is generally in March.
(2) Fertilizing and feeding. In the culture pond, some manure is first applied to cultivate floating organisms to provide bait for snails. Fertilization amount depends on the bottom quality of snail pond. After the snails are put into the pond, they are fed with vegetables, rice bran, fish offal or vegetable cakes and bean cakes. Green horn and fish viscera should be chopped and mixed with rice bran and other feeds. Vegetable cakes, bean cakes, etc. should be soaked and softened to facilitate the feeding of snails. The feeding amount depends on the feeding situation of the snail, and is generally calculated as 1%-3% of the total snail, and it is fed once every 2-3 days. Feeding time every morning, the feeding position does not have to be fixed, and the feed is put every other day. When the temperature is lower than 15℃ or higher than 30℃, there is no need to feed.
3. Water quality adjustment. First, the snail pond should be filled with fresh water frequently to adjust the water quality, especially in the breeding season. It is best to keep the pond water flowing, especially in the high temperature season, and it is better to adopt running water culture. In spring and autumn, it is better to cultivate with micro-flow water. The water depth of the snail pool should always be about 30 cm. The second is to adjust the pH of water. When the pH value of the pool water is low, apply 0.15-0.18kg of quicklime per square meter and sprinkle it every 10- 15 days to keep the pH value of the pool water at 7-8.
4. Wintering management of snail. When the water temperature drops to 8-9℃, the snail begins to hibernate. During hibernation, the snail drills the soil with the top of the shell, leaving only a circular hole on the soil surface, and bubbles come out from time to time to breathe. The snail does not eat during the wintering period, but the water depth of the culture pond still needs to be kept10-15cm. Generally, water is exchanged every 3-4 days to maintain proper oxygen content.