First, snail breeding and living habits
1. At the end of spring and early summer in the breeding season, when the water temperature rises to 15°C, the snail climbs out of the hole in winter to feed on the ground, and it begins to breed in April. From April to September every year, it is the snail's calving season, July to August. The month is a strong season of snail breeding. 1 to 2 instar females can produce 20 to 30 litters, and 4 instar females can produce 40 to 50 litters. After it is born, it grows rapidly and can develop into sexual maturity within 1 year.
2. Living habits The snail is a gastropod mollusk that prefers to live in waters that are cool in winter, cool in summer, rich in bottom sediments, rich in feed, and fresh in water. The snail is an omnivorous animal that feeds on microorganisms and organic matter or young shoots and leaves of aquatic plants in drinking water, enjoys nocturnal activities, and has strong food intake at night.
Second, snail breeding site selection and construction of snail breeding sites to choose ample water, good water quality, humus soil and convenient transportation, it is best to have running water. Tianluo Chi is generally 1.5 meters to 1.6 meters wide and 10 meters to 15 meters long. Around the pool should be made of 埂, about 50 cm high. The two sides of the pond are set in and out of the outlet, and a block is installed to prevent the snails from escaping. At the same time, aquaculture ponds should be planted with some aquatic plants such as alfalfa, which will not only increase the utilization rate of ponds, but also create a good ecological environment for the growth of snails.
Third, the amount of stocking and feeding management
1. Stocking density The snail stocking is generally carried out in March, and is generally stocked with 100 to 200 animals per square meter. At the same time, about 5 fish species can be cultivated per square meter.
2. Fertilizing and feeding culture ponds should be used to put some feces to cultivate plankton to provide feed for snails. Fertilizer amount depending on the bottom of the screw pool fat and thin. After the snails are placed in the pool, they start feeding greens, rice bran, fish giblets or tea cakes, and bean cakes. Vegetables and fish viscera should be chopped and mixed with rice bran and other feed. Cakes, bean cakes, etc. must be soaked and softened so that snails can feed. Feeding amount depends on the feeding condition of snails. Generally, the feeding amount is 1% to 3% of the total amount of snails, feeding every 2 days to 3 days, feeding should be conducted in the morning, and the feeding position does not have to be fixed. When the temperature is lower than 15°C or higher than 30°C, no bait is required.
3. Water quality regulation (1) The spiral pool should be frequently injected with fresh water to regulate water quality, especially during the breeding season, and the water flow should be maintained. In the spring and autumn season, it is better to use microfluidic culture; in the hot season, it is better to adopt stream water culture. The water depth of the snail pool must be maintained at about 30 cm. (2) regulate the pH of water. When the pH of the pool water is low, 0.15 kg to 0.18 kg of lime per square meter of lime are applied every 10 to 15 days to maintain the pH of the pool water at 7 to 8.
4. Winter snail management When the water temperature drops to 8 °C ~ 9 °C, snails began to hibernate. When hibernating, the snails used the top of the shell to drill the soil, leaving only a small hole in the soil surface and breathing bubbles from time to time. Snail does not eat during the winter, but the breeding pool still needs to maintain a water depth of 10 cm to 15 cm, changing the water every 3 days to 4 days to maintain a proper oxygen content.
5. Harvested Listed snails have been carefully reared for 1 year, and individuals can reach more than 10 grams. Fishing methods can be done in the pool. When fishing, large individual snails should be selected for the cultivation of snails to prepare for the breeding of snails in the following year.
Snail is a traditional aquatic product in China. It is fresh and delicious, with unique flavor, rich in protein, fat and phosphorus, calcium, iron and vitamins. It is a nutrient food favored by consumers. Farmers can use small water or rice fields to raise snails, which can achieve considerable economic benefits. The snail farming technology is introduced as follows: