What are the nutritional requirements of cultured field snails?

If you want to get the wealth you want in the field snail culture, you must first understand some of the culture techniques of the field snail, as well as some problems that may be encountered in the culture process, as well as the methods to solve it, and the second is to analyze the market situation of the field snail and find the best time.

What are the nutritional requirements of cultured field snails?

1. Protein. Protein is a necessary nutrient for the growth and maintenance of life and tissue of Oncomelania hupensis. It not only constitutes its physique, but also plays a very important role as a component of enzymes and hormones. The main source of protein: protein is divided into two categories: plant protein and animal protein. Plant protein mainly comes from cereals and legumes, while animal protein mainly comes from livestock meat, poultry meat, fish, eggs and milk.

2. Fat. The main function of fat: supplying calories. Adipose tissue plays a role in regulating body temperature, preventing body temperature from spreading, and protecting internal organs. Therefore, in the process of growth and development, snails should constantly absorb a certain amount of fat from feed to meet their physiological needs.

3. Carbohydrates. The carbohydrates in the diet are mainly starch and cellulose. The main function of carbohydrates is to supply heat. Sugars are found in all nerve tissues, cells and body fluids. Carbohydrates can assist fat oxidation and promote growth and development.

4. Vitamins Vitamins are a kind of compounds necessary to maintain the normal physiological function of snails. There are many kinds of vitamins, which are usually divided into fat-soluble and water-soluble vitamins. Fat-soluble vitamins include vitamin A, vitamin D, vitamin E and vitamin K. water-soluble vitamins include B vitamins and vitamin C.

5. Energy. In order to maintain life and metabolic activities, snails must obtain energy from bait every day to meet the needs of the body. The main energy substances in feed are sugars, lipids and proteins, which release energy through the process of biological oxidation in the body and the oxidation absorbed by the Gill.

6. Inorganic salts and trace elements. Although inorganic salts and trace elements can not provide energy to the body, they are of great significance in normal life activities. they not only constitute the components of tissue, but also necessary to maintain normal physiological function. therefore, it is extremely important to meet the needs of snails for inorganic salts and trace elements. All kinds of chemical elements except ammonia, nitrogen, hydrogen and carbon are collectively called inorganic salts, in which calcium, magnesium, potassium, sodium, phosphorus, sulfur and chlorine are high, while others, such as iron, iodine, copper, zinc, manganese and cobalt, are very little. but it has a great impact on the nutrition and function of the body.

Nutritional value of field snail

1. Snail meat is rich in protein eggs, vitamins and essential amino acids and trace elements. It is a typical natural animal health food with high protein, low fat and high calcium.

2. Vitamin An in snail can adjust the ability of eyes to adapt to external light, reduce the occurrence of night blindness and vision loss, and contribute to the treatment of a variety of eye diseases, such as dry eyeballs and conjunctivitis.

3. The snail is rich in protein, which can maintain the balance of potassium and sodium, eliminate edema, improve immunity, lower blood pressure and buffer anemia, which is beneficial to human growth and development.

4. Field snail is rich in calcium. Calcium is the basic raw material for bone development, which directly affects the height.

5. Field snail is rich in copper, which plays an important role in the development and function of blood, central nervous system, immune system, hair, skin, brain, liver and heart.

6. The snail is rich in iron, which is an essential component of hematopoiesis and is suitable for the treatment of iron deficiency anemia.

7. The field snail has the highest protein content and the lowest fat content, which can be called the leader of nutrition in shellfish, and is known as the "pearl in the plate".

Culture techniques of field snail

Field snails are mostly propagated naturally, and can be picked up from paddy fields, Zizania caduciflora and muddy water ditches or bought in the market, and then fresh snails with light brown color, thin shell and blunt body and tail can be selected as species. Generally speaking, field snails weighing 15-25 grams can reach sexual maturity and reproduce above 15 ℃. The female snail is large and round, while the male snail is small and pointed.

1. Stocking and breeding

The optimum growth temperature of field snail is 20: 25 ℃. If it is lower than 15 ℃ or higher than 30 ℃, the snail stops feeding and hibernates below 10 ℃. It can be stocked from March to November in the south of the Yangtze River. if it is stocked in the natural area, 11 species of snails can be invested per square meter (3 males and 8 females). If there is a single culture in the digging pond, there are 100,500 snails per square meter, and the water layer depth is 0.8 to 1 meter. The bottom of the pond retains a layer of silt of more than 10 centimeters, which is convenient for field snails to crawl, feed, perch and so on. Female and male snails can reproduce naturally when they are stocked together.

2. Feeding and feeding

Field snail is omnivorous, rice bran, vegetable crumbs, melon leaves, animal carcasses and commercial feed can be fed, generally to aquatic plants, soil humus, vegetables and other staple food. Fertile paddy fields, fish and snail mixed culture or water surface stocking red duckweed, green duckweed, water hyacinth and other depressions, can be little or no feed.

3. Reproduction management

The field snail is a viviparous animal. In the south, the breeding period is from April to May and from September to November every year. The female snail usually gives birth in batches. Each snail can produce 20 small snails each time. It takes 14 to 16 months for the female snail to reproduce again. The weight of the newly produced snail is 0.5 million 1.5 grams, which can reach more than 3 grams after 6 months and about 9 grams after 9 months.

4. Fishing harvest

Field snails should be selectively fished into snails when fishing, and more female snails can be harvested in batches. The water temperature is higher in midsummer and early autumn, and snails often hide in the soil and grass at noon. They must be picked in the morning and evening, and can also be picked by drainage. For every 100 female snails, the annual output can reach 100 kg.

The market prospect of raising field snail

Field snail is the general name of edible aquatic animals of Oncomellidae. There are many kinds of snails, such as round field snail, field snail, yellow snail, snail, sweet snail and so on. Snail meat is a kind of nutritious natural health food, and it is also known as beauty food abroad. It contains 10.3% protein and 1.2% fat, as well as vitamins, calcium, iron and other essential elements. The nutrition of field snail meat is better than that of chickens, ducks, geese and pigs, and is no less than that of crucian carp and sea cucumbers.

Snail meat can nourish kidney yin, clear eyes and clear brain, enhance muscle elasticity, delicate skin and so on. Field snail can be used as home meat, can also be processed into a series of food, cooking a variety of medicinal meals, disease prevention and treatment. At present, the natural growth of field snail is far from being able to meet the market demand, and the field snail culture grows fast, the yield is high, and there is a wide range of ways to cultivate field snail "money". In recent years, with the decrease of the natural output of field snail, the field snail market is becoming more and more optimistic. At present, artificial breeding has been started in Guangdong, Fujian and other areas, and many farmers have made great efforts to cultivate snails as a way to start a business.

Although farming field snail is a relatively easy thing to say, it is not as tedious as other farming, but really want to do this thing well, still need to pay attention to a lot of technology. We all know that the field snail is rich in nutritional value, but the market is currently in short supply, so the development prospect of cultured field snail is still very good.