CATDOLL : CATDOLL: How many months does it take for snail seedlings to grow into adult snails? How many kilograms can be produced from one acre of farming?

How many months does it take for snail seedlings to grow into adult snails? How many kilograms can be produced from one acre of farming?

answer

The weight of a newly produced snail is about 0.5-1.5g. After 6 months, it can reach more than 3-5g, 9 months can reach about 9g, and 14-16 months can grow into a breeding snail. One acre of rice fields is raised with young snails, and they are sold after they grow up, which can produce about 300-360kg.

1. How many months does it take for snail seedlings to grow into adult snails?

Newly laid snails generally weigh 0.5-1.5g. After 6 months of breeding, they can reach more than 3-5g. After 9 months of breeding, they can reach about 9g. After 14-16 months of breeding, they can grow into breeding snails.

2. Snail farming technology

1. Rice field transformation

The paddy field base is raised to 80-100cm and compacted to prevent water leakage. At the same time, trenches are dug around the paddy field, 0.5-1m wide and 20-50cm deep, and duckweed or water peanuts are planted.

2. Rice field treatment

About 10 days before release, dissolve 50-75 kg of the product in water per acre and sprinkle it on the rice field for disinfection; after disinfection, use 300 kg of base fertilizer (chicken manure: chopped straw = 3:1) per acre of rice field.

3. Stocking snail seedlings

25,000-30,000 young snails (5g/snail) are released per acre of rice field, totaling 125-150kg. They are disinfected with 5% salt water before release.

4. Feeding

When the temperature is 20-28°C, the daily feeding amount is 2-3% of the snail's body weight, and it is fed every 2 days; when the temperature is 15-20°C, or 28-30°C, it is fed twice every 7 days, and the feeding amount each time is 1% of the body weight. When the temperature is below 15°C or above 30°C, do not feed or feed less.

5. Management

(1) The water depth is generally around 10 cm. When the water quality is poor, change the water by half to one quarter each time.

(2) In winter, a layer of straw is spread in the rice fields to help the snails survive the winter.

(3) When it rains, check the drainage outlets in time to prevent water from overflowing the ridges and causing the snails to escape.

3. How many pounds can be produced from breeding one mu of snails?

1. It takes about 4 months to raise the snails to a size that can be sold. Each snail can weigh about 10-12g, and the final yield is about 300kg-360kg.

2. If the snails are raised in the wild, one snail can produce an average of 100-150 young snails a year. However, the stocking density cannot be as high as that of young snails. Generally, about 900-1500 snails are released per acre of land. After raising all the young snails, about 900kg can be harvested.

How to breed snails and how long is the breeding cycle?

The growth cycle of river snails:

The weight of newly produced snails is 0.5-1.5 grams. After 6 months, it can reach more than 3-5 grams, and 9 months can reach about 9 grams. Therefore, the general growth cycle is about 9 months. It is necessary to selectively catch the adult snails, keep more female snails, and harvest them in batches.

About the breeding method of field snails:

1. Fertilization and feeding

First, add some feces to the breeding pond to cultivate plankton to provide food for the snails. The amount of fertilizer depends on the fatness of the bottom of the snail pond. After the snails are put into the pond, feed them with green vegetables, rice bran, fish viscera or vegetable cakes, bean cakes, etc. Chop the green horns and fish viscera and mix them with rice bran and other feeds before feeding. Soak the vegetable cakes, bean cakes, etc. to soften them for the snails to eat. The feeding amount depends on the snails' feeding situation. It is generally calculated as 1%-3% of the total amount of snails, and feeds are fed every 2-3 days. The feeding time is every morning, and the feeding location does not need to be fixed. Feed is added every other day. When the temperature is below 15℃ or above 30℃, no feeding is required.

2. Water quality regulation

First, the snail pond should be frequently filled with new water to regulate the water quality, especially during the breeding season. It is best to keep the water flowing, especially in the hot season, and the effect of water culture is better. In spring and autumn, micro-flow water culture is better. The depth of the snail pond should be kept at about 30 cm. Second, adjust the pH of the water. When the pH value of the pond water is low, apply 0.15-0.18 kg of quicklime per square meter, once every 10-15 days, to keep the pH value of the pond water at 7-8.

3. Winter management of snails

When the water temperature drops to 8-9℃, the snails begin to hibernate. During hibernation, the snails use the top of their shells to drill into the soil, leaving only a small round hole on the soil surface, from which bubbles occasionally come out to breathe. The snails do not eat during the winter, but the breeding pond still needs to maintain a water depth of 10-15 cm. Generally, the water is exchanged every 3-4 days to maintain the appropriate oxygen content.

4. Daily management

It is strictly forbidden to flow into water sources polluted by pesticides and fertilizers; prevent ducks, snakes, rats, birds and other pests from invading; remove weeds and grass roots in the water in time. Usually, use micro-flow water to keep the water level at about 30 cm. Increase the water flow in high temperature seasons to control the water temperature and ensure sufficient dissolved oxygen in the water. In cold weather, snails hibernate in the soil. At this time, change the water 1 to 2 times a week and sprinkle some chopped straw into the water to facilitate the snails to overwinter.

Additional information:

River snails refer to mollusks of the family Snailidae, belonging to the class Gastropoda of the phylum Mollusca, subclass Prosobranchia of the subclass Snailidae. River snails are distributed in most parts of China.

When the water temperature rises to 15℃ in late spring and early summer, the snails crawl out of their hibernating holes and feed and grow at the bottom of the water. They start to reproduce in April, and July to August is the peak season for snail reproduction. Female snails aged 1 to 2 years can produce 20 to 30 offspring, and female snails aged 4 years and above can produce 40 to 50 offspring. The offspring grow rapidly after birth and can develop into sexual maturity in one year. The offspring season is from April to September every year.

Field snails like to live in aquatic environments with bottom mud rich in humus, such as lakes with lush aquatic plants, ponds, fields or slow-flowing ditches. They often feed on microorganisms and humus in the soil, phytoplankton in the water, young aquatic plants, moss, etc. They also like to eat artificial feed, such as fruits and vegetables, vegetable leaves, rice bran, wheat bran, soybean meal (cakes) and various animal scraps.

Reference: Baidu Encyclopedia - Snail

1. Choose the right snail species. Snail species can be collected from rice fields, ponds, and ditches. Parent snails should be selected with light color, thin shell, round body, large size, intact ear shell, and complete operculum. Female field snails are large and round, with equal-sized antennae on the left and right of the head, and extend forward. Male snails are small and long, with the right antennae on the head thicker and shorter than the left antennae, and the end is bent inward to the right. The bent part is the reproductive organ. The ratio of male and female snails is 8:2 for breeding.

2. Prepare the breeding site. You can build a pond for single breeding, or use rice fields, ditches, ponds for breeding, or fish and snails can be mixed. The single snail breeding pond should be built in a place with convenient drainage and no wastewater pollution. The width of the pond is 1.5 meters, the water depth is 35-45 cm, and the length is unlimited. A levee about 20 cm above the water surface is built on the edge of the pond, and an inlet and outlet are opened at the diagonal corner of the pond, and an escape prevention net is set. Artificial breeding must also be covered with a certain thickness of silt layer, and aquatic plants such as algae, water lilies, and red duckweed should be cultivated on the surface of the pond for the snails to eat, provide shade and shelter from the heat, and live.

3. Release and breeding The best reproductive period for field snails is from April to October, and the optimal growth temperature is 20℃～27℃. The fertilized eggs develop into young snails in the female snail nursery. A female snail can produce 20 to 30 young snails each time, and can produce more than 150 in a year. They can eat 2 to 3 weeks after giving birth. In artificial breeding ponds, 100 to 150 parent snails are placed per square meter; in natural waters, 15 to 25 are placed per square meter. Snails have a very diverse diet and can be fed with vegetables, bean cakes, rice bran, sweet potatoes, insects, fish and shrimp, and animal viscera and scraps. Solid baits should be soaked first, and fish and shrimp and animal viscera should be chopped up, then mixed with rice bran or bean cake and wheat bran and fed in a dispersed manner. Feed once a day at 8 or 9 a.m., and the daily feeding amount is 1% to 3% of the snail's body weight, and it increases or decreases with the increase in body weight and the amount of food intake. For more fertile rice fields and fish-snail mixed culture ponds, which have abundant natural bait, less or no bait can be added.

IV. Strengthen management. Snails will die when the dissolved gas per liter of water is less than 1.5 mg or when the water temperature exceeds 40 ℃. In order to promote the rapid growth of snails, in the hot seasons of spring and autumn when snails are feeding vigorously, in addition to planting aquatic plants in the breeding pond in advance to provide shade and shelter from the heat, it is also necessary to use running water to irrigate the pond and breed in a semi-flowing water method to reduce the water temperature and increase dissolved oxygen. When the snails have internal overflow and calcium deficiency after the operculum shrinks, fish meal, shell powder, etc. should be added to the bait. The operculum sinks into the shell because the bait is insufficient, and the feeding should be increased. Omnivorous and carnivorous species such as fish and perch cannot be raised in snail breeding ponds. It is strictly forbidden to apply pesticides in snail breeding fields or allow water sources with pesticides to flow in.

Additional information:

Snails are tender and delicious, rich in nutrition, with a protein content of 15.9% and rich in calcium. They are not only a top-grade health food for people, but also an animal feed that livestock, poultry and fish like to eat. Generally, one mu of snails can yield 2,000 kg to 2,200 kg of snails, with an output value of 1,700 to 2,200 yuan.

References:

Baidu Encyclopedia: Snail

From March to November, you can start breeding snails. If you are breeding them in a natural area, the water depth should be 0.8 to 1 meter. Keep a layer of silt at least 10 centimeters thick at the bottom of the pond to facilitate the snails to crawl, feed, and live. When breeding, release male and female snails together to reproduce naturally. The general cycle is 6 months. After 6 months, the snails can reach 3 to 5 grams or more, and they can be harvested at this time.

Additional information

The snail is a gastropod mollusk that likes to live in waters that are warm in winter and cool in summer, with soft bottom, abundant bait and fresh water. It especially likes to gather in places with slight currents. The snail has a varied diet, mainly eating tender stems and leaves of aquatic plants, organic debris, etc., and it likes to move and feed at night. The most suitable temperature for its growth is 20-27℃.

Field snails like to live in aquatic environments with bottom mud rich in humus, such as lakes with lush aquatic plants, ponds, fields or slow-flowing ditches. They often feed on microorganisms and humus in the soil, phytoplankton in the water, young aquatic plants, moss, etc. They also like to eat artificial feed, such as fruits and vegetables, vegetable leaves, rice bran, wheat bran, soybean meal (cakes) and various animal scraps.

The snail is cold-resistant but afraid of heat. Its suitable living temperature is 20-28℃. When the water temperature is lower than 10℃ or higher than 30℃, it will stop eating and burrow into the soil or grass to avoid the cold and heat. When the water temperature exceeds 40℃, the snail will be scalded to death. In the dry season, it will completely retract its soft body into the shell to reduce water evaporation; in the cold winter, it will burrow into the soil and not eat or move, in a hibernation state.

The male and female snails are different in sex, and the main way to distinguish between male and female snails is based on the shape of their right antennae. The right antennae of male snails bend to the right (the bent part is the male reproductive organ). In addition, female snails are large and round, while male snails are small and long.

References Baidu Encyclopedia Snails

1. Aquaculture water

Snails have strong adaptability and few diseases. As long as they are protected from large amounts of pesticides and fertilizers, they can be raised in many flat rivers, streams, pits, rice fields, ponds and other ordinary water bodies in rural areas. Keep the bottom mud 10cm-15cm thick and the area is not limited. If it is an open water body, a small amount of red duckweed and water lilies can be cultivated on the water surface, some long-vine melons and vegetables can be planted around the pond to provide shade, and bamboo can be arranged in the water.

Tail, branches or stones, grass, etc. are used as shelter for snails. Ten days before the release of snails, 50kg-100kg of quicklime is applied to the whole pond to remove wild fish, shrimp and other miscellaneous snails at a rate of 1/15 hectare. After 3-4 days, organic fertilizers and breeding bait organisms are piled in the water body for snails to eat.

2. Stocking of snails

It is best to stock the snails in the early stage of snail breeding. The sources of snails are: one is wild collection, the other is market collection. Select fresh snails with light brown color, thin and complete shells, and blunt domes. Generally, 0.1kg-0.5kg of snails are stocked per square meter in natural extensive water bodies, and the amount of stocking can be increased by 2-3 times in intensive breeding ponds. Farmed snails can be stocked alone, or some silver carp and bighead carp can be raised together, or snails and loaches can be mixed.

3. Feeding and management

In the extensive breeding method in natural waters, it is only necessary to maintain the fertility of the water body and apply an appropriate amount of manure, chicken manure, cow manure, pig manure or straw and other organic fertilizers at regular intervals to meet the growth needs of field snails. In the case of high-density intensive breeding, artificial bait must be added. Field snails do not have high nutritional requirements. Simply using rice bran, wheat bran, and soybean powder in a ratio of 60%, 25%, and 15% can become a superior feed for field snails.

According to the snails' eating habits and climate conditions, when the temperature is suitable for their growth (i.e. 20℃-28℃), the snails have a strong appetite and can be fed once every two days, with each feeding amount being 2%-3% of their body weight. When the water temperature is between 15℃-20℃ and 28℃-30℃, feed them twice a week, with each feeding amount being about 1%. When the temperature is below 15℃ or above 30℃, feed less or nothing.

4. Daily management work

It is strictly forbidden to flow into water sources polluted by pesticides and fertilizers; prevent ducks, snakes, rats, birds and other pests from invading; remove weeds and grass roots in the water in time. Usually, use micro-flow water to keep the water level at about 30cm. Increase the water flow in high temperature seasons to control the water temperature and ensure sufficient dissolved oxygen in the water. In cold weather, snails hibernate in the soil. At this time, change the water once or twice a week, and sprinkle some chopped straw into the water to facilitate the snails to overwinter.

5. Harvest and transportation

After a year of careful breeding, the weight of the young snails can reach 10g-20g, and the snails hatched that year can reach a size of more than 5g.

When harvesting snails, we adopt the method of catching the big ones and leaving the small ones, and market them in batches. We selectively take the adult snails, keep the young snails, and pay attention to selecting some female snails to achieve natural replanting, so that there is no need to release seedlings in the future. According to their living habits, in the hot summer and autumn seasons, we choose to pick them up on the bamboo branches and grass handles rotating on the shore or in the water in the early morning and at night; in winter and spring, we choose to pick them up at noon on sunny days. In addition, we can also harvest snails by catching them in the pond or picking them up by draining the pond. The transportation of snails is very simple. They can be placed in ordinary bamboo baskets, wooden barrels, etc., or packed in woven bags. During transportation, just keep the snails moist and prevent them from being exposed to the sun.