2. Snails are mostly naturally propagated, which can be collected manually by rivers, paddy fields and other places or purchased in the market. Seed snails should be fresh snails with thin shell, light brown and blunt tail. The stocking time of river snail is generally in March, so attention should be paid to avoid high temperature and hot time when stocking, and it is suitable for growing in the environment of 15 ~ 30℃. The stocking density is usually per square meter 100- 120. At the same time, the main breeder should raise about 5 kinds of silver carp and bighead carp per square meter.
3. Reproductive Law When the water temperature rises to 15℃ in late spring and early summer, snails climb out of the wintering hole to find food to grow under the water. Breeding begins in April, and July-August is the season for snail breeding. 1 Females aged 0 to 2 can give birth to 20 to 30, and females over 4 can give birth to 40 to 50. Snails grow rapidly after birth and mature within one year.
4. Feeding and management Snails have a wide range of food sources. In nature, snails usually feed on young aquatic plants or plankton. Cultured snails can generally be fed with cow dung or chicken manure, and can also promote the growth and reproduction of plankton or aquatic plants in the water, and ultimately indirectly provide more food sources for the growth of snails. In addition, some vegetables or rotten fruits can be mashed and fed. Of course, most farmers still use wheat bran, soybean meal and corn flour as snail feed at the ratio of 6:3: 1. Its advantage is that the high protein content of soybean flour can accelerate the growth rate.