Vitamins are organic compounds and vital nutrients that an organism requires in limited amounts. An organic chemical compound (or related set of compounds) is called a vitamin when the organism cannot synthesize the compound in sufficient quantities, and it must be obtained through the diet.
Your body needs them to work properly, so you grow and develop just like you should. They are essential for the normal growth and development of a multicellular organism. Once growth and development are completed, vitamins remain essential nutrients for the healthy maintenance of the cells, tissues, and organs that make up a multicellular organism; they also enable a multicellular life form to efficiently use chemical energy provided by food it eats, and to help process the proteins, carbohydrates, and fats required for respiration.
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Spiral breeding technology
Snail is a freshwater snail produced in China and is a superior health food. In recent years, with the natural production of snails gradually decreasing, snail market continues to be optimistic. At present, artificial breeding has begun in Guangdong, Fujian and other regions, and many farmers have used the cultivated snail as a pioneering path to develop. The snail breeding technique is briefly introduced. I. The habit of snails Field snails inhabit the aquatic environment rich in humus in sediments, such as lush lakes, pond marshes, ridges, or river channels in slow flow, often with microorganisms in soil, humus, and phytoplankton in water. Young aquatic plants, moss and other food, but also eat artificial feed, such as fruits and vegetables, vegetables, rice bran, wheat bran, soybean meal (cake) and various animal waste. The snail is hardy and heat-fighting, and its suitable temperature for living is 20°C to 28°C. When the water temperature is lower than 10°C or higher than 30°C, it stops feeding, digs into the soil, and avoids the cold and summer heat in the grass. When the water temperature exceeds 40°C, snails are burnt. Second, snail breeding breeding snail dioecious. The method of distinguishing the male and female of the snail is mainly based on the shape of the right antenna. The right tentacles of the snails are bent rightwards (the male genitalia is bent). In addition, the female snails are large and round, and the male snails are small and long. The snail is an oviparous animal whose reproduction is unique. Both the snail's embryonic development and the development of the snails are done in the mother's body. From the fertilized egg to the production of young snails, it takes about one year to grow in the mother's body. The snails are spawned in batches. They start breeding from March to April every year. At the same time, the female and male snails are mated and fertilized. At the same time, the snails that are to be produced in the following year are bred in the mother. A female snail produces about 100 to 150 juvenile snails throughout the year. Third, artificial breeding 1. Aquaculture water snail adaptation ability, less disease, as long as avoid a lot of pesticides, chemical poisoning, rural areas, many flat rivers, streams, pits, rice fields, ponds and other ordinary water can be stocked. Such as digging the pond, the choice of water source is convenient, and a pond is built for the location of the humus soil (if the soil is not suitable, it is better to apply mixed compost to improve it). Keep sediment thickness 10 cm to 15 cm, unlimited size. If it is an open body of water, a small amount of red leeks and water lilies can be cultivated on the surface of the water, and some long vine melons and vegetables can be planted on the surface of the pond for shading. Bamboo tails, branches or stones, and grass can be arranged in the water to cover the habitat of snails. In the 10 days before the snail is released, lime is used to remove wild fish, shrimp, and other snails at a rate of 50 kg to 100 kg per mu. After 3 days to 4 days, organic fertilizers and bait feeds are stored in the water for feeding by snails. 2. The breeding of screw species for breeding stocks is best done in the early stage of snail breeding. The source of snails: one is field collection and the other is market collection. Choose a lively snail with a light brown color, a thin and complete shell, and a blunt body dome. In general, 0.1 kg to 0.5 kg of species are placed per square meter in natural rough water, and intensive breeding ponds can be increased by 2x to 3x. Cultured snails can be stocked individually, or they can be stocked with some species of clams and sturgeons, or they can adopt snails and muddy polyculture. 3. Feeding and managing the extensive farming methods in natural waters, only need to maintain the water body fatness, and apply appropriate amount of manure, chicken manure, cow dung, pig manure or rice straw and other organic fertilizers at regular intervals to meet the growth needs of snails. In the case of high-density intensive culture, artificial bait must be cast. The snail's nutrient requirement is not high. Simply use rice bran, wheat bran, and soybean meal at a ratio of 60%, 25%, and 15% to match the upper feed of snails. According to snail eating conditions and climate conditions, within the suitable temperature for growth (ie 20 °C ~ 28 °C), snails appetite is strong, can be fed once every two days, each feeding amount is 2% to 3% of body weight. When the water temperature is in the range of 15°C to 20°C and 28°C to 30°C, it is fed twice a week for about 1% each time. When the temperature is lower than 15 °C or higher than 30 °C, less or no vote. Fourth, daily management work is prohibited from flowing into water sources contaminated by pesticides and chemical fertilizers; ducks, snakes, rats, birds and other hostile insects are prevented from intruding; weeds and grass roots are removed in time. Usually take the form of micro-water, keep the water level at about 30 cm. During the hot season, increase the flow of water to control the increase of water temperature and ensure that the dissolved oxygen in the water is sufficient. In cold weather, the snail enters the earth and hibernates. At this time, the water is changed once or twice a week, and some chopped straw is sprinkled on the water body to facilitate snail wintering. V. Harvesting and transportation After one year of careful feeding, the young snails put in can reach 10g to 20g, and the hatched snails can reach 5g or more specifications. When snails are harvested, they adopt the method of catching large stocks and staying small and listing them in batches, selectively taking snails, keeping young snails, and paying attention to selecting and retaining some female snails so that natural seedlings can be replanted, and seedlings need not be put in later. According to their living habits, in the summer and autumn hot season, choose bamboo branches and grass handles that rotate in the early morning and at night on the shore or in the water body; in the winter and spring, pick a sunny day at noon. In addition, the snails can also be harvested by means of catching in the pool or picking up the drained dry pool. Snail's transportation is very simple, can be used ordinary bamboo, wooden barrels, etc., can also be packaged in woven bags, as long as the transportation to maintain the snail moist, to prevent exposure.