The Chinese Wutangtang belongs to the genus Tanggutang. Chinese Wu Tang is rich in nutrients, delicious in flesh, and has the effect of accelerating the healing of wounds. In addition, the fish is most characterized by the fact that the water can be kept for a week without death in the damp and wet conditions, and is a suitable live animal for export and sales. One of the good seafood varieties for export.
At present, the breeding of Chinese Wudang has begun to take shape, but its feed processing and fish disease prevention and control technology is not perfect, and the range of sea areas suitable for conservation is not wide. In recent years, the efficiency of the Chinese Wudang aquilegia breeding has been relatively high, the technical requirements are not very high, and the risk is small, and it has been welcomed by the coastal masses.
First, living habits
Chinese Wudang pupa is a warm water shallow sea salty freshwater fish. It is mainly distributed in estuaries and harbors and inhabits mud holes or caves. Small size, meat, like eating small crabs, shrimp, fish, shellfish and so on. Wide salinity, optimum salinity 5‰-15‰, slow growth above 21‰. The optimum water temperature is 23-26°C. When the water temperature is lower than 15°C, it is generally in the cave and does not feed outside. The lethal water temperature is below 10°C. A pH of 7.0 to 8.2 is appropriate, requiring a dissolved oxygen level above 4.0 mg/l.
Second, fish pond conditions and structure
Chinese Wudang pupa is a wide-salinity fish with an optimal salinity of 5‰-15‰. If the salinity is too high (above 25‰), the growth of fish is slow and susceptible to disease, so the best choice for fish ponds In estuaries or harbors and coastal areas where fresh water is abundant. Fish ponds are generally sterilized after draining water, and are easy to operate. The area is generally 0.5-1.5 mu. It is appropriate to use stone-based ponds and sand-filled ponds. The water should be flat and convenient for water injection. The water depth is about 1.5 meters. Fish tanks, tiles, large-caliber bamboo tubes or grey plastic tubes can be used as inhabitants in the fishponds, commonly known as fish houses. There are holes or seams on the side and top of the fish house to facilitate fish movement.
三ã€Preparation of ponds before transplanting
Before putting the seedlings, the pond must drain water. After dredging, exposure to the bottom of the pool dry, after exposure to lime per acre 100-150 kg or 5-10 kg of bleach disinfection. After 3-5 days, concealed objects such as tiles and gray plastic pipes are laid at the bottom of the pool, and then the water is filtered with a 40 mesh net, the water depth is 60-80 cm, and ammonium carbonate 0.5-1 kg/mu and superphosphate 0.05 are applied. 0.1 kg/mu fertilizer water.
Fourth, the stocking of fry
Fertilizer 3-5 days after the fish can be put, put the seedlings must be put fry before the test of water for more than 12 hours, no problem in order to put seedlings. The fish fry before entering the pond can be bathed with 5ppm potassium permanganate solution for about 5 minutes. Be careful to put the fish into the pond from the surface of the pond as soon as possible when it is put into use. When the fish are killed, disabled and disabled, the fish fry size is 40-60. / kg, 150-250 kg can be stocked per mu.
V. Feeding management
1, bait and feeding
Chinese Wutang oysters like to eat fresh or chilled small junk fish, shrimp, crab, shellfish and so on. For rotting odor or bone sting more than the bait do not feed, because the bone sting more bait will pierce the fish's stomach, prone to gastroenteritis, bad food will pollute fish ponds. The fry stage is fed 1-2 times a day, and the adult stage is fed once a day or every other day. Feeding amount depends on the number of fish, feeding, water quality, water temperature, weather, etc., to determine the amount of each feeding, in order to avoid bait polluting fish ponds, the general amount of feeding is 6% -12% of the total fish weight, It is better to eat basically after feeding for 40 minutes. The bait coefficient is 5-7.
2, water quality management
The requirements for water quality are not very strict in China Wutang, but the pond water must not be too turbid. It is generally required to thoroughly change the water once a week. If the salinity is high (more than 15 )), appropriate fresh water is injected. Every 10-15 days, 5-10 kg/mu of quicklime or 0.4-0.5ppm strong chlorine or 1-1.2ppm bleach shall be splashed once.
3. Disinfection and disinfection in the breeding process
The breeding period of Chinese Wudang pupa is longer. During the breeding process, residual bait and excrement are deposited in the fish house. There is also foreign seawater with viruses, bacteria and other substances. If it is not cleaned and disinfected in time, it will cause fish disease. Or make the fish grow slowly. The fish house should be cleaned once every two months. The specific method is to drain the fish ponds, catch all the fish first, use the plastic film mats in a cool and ventilated place, and then open up the hidden inhabitants in the pond. Weeds and other debris should be cleaned up, treated with disinfectant, and then moved to a new location to house the fish house, followed by fresh seawater injection. Weighing the total weight of the fish and then put it into the pond to facilitate accurate control of the amount of feeding this year, and to find the diseased or injured fish, we must promptly separate and treat.
4, heatstroke and wintering
In the high temperature season, especially in the hot sun, it is necessary to maintain a water depth of 1.5 meters or more and the fish houses are numerous and small so that the fish can be dispersed. In winter, when the water temperature is below 15°C, it is generally not for feeding, and it begins to die below 10°C. Before winter, it is necessary to strengthen the nutrition and fattening and move the fish to sheltered or muddy ponds. The fish house can be thickened. Cover it with a layer of mud.
5, get listed
Chinese Wutang can raise the weight to more than 150 grams and can be listed on the market to catch up and stay small. However, it should try to avoid the season of other aquaculture products listed in October-November in order to sell a good price.
At present, the breeding of Chinese Wudang has begun to take shape, but its feed processing and fish disease prevention and control technology is not perfect, and the range of sea areas suitable for conservation is not wide. In recent years, the efficiency of the Chinese Wudang aquilegia breeding has been relatively high, the technical requirements are not very high, and the risk is small, and it has been welcomed by the coastal masses.
First, living habits
Chinese Wudang pupa is a warm water shallow sea salty freshwater fish. It is mainly distributed in estuaries and harbors and inhabits mud holes or caves. Small size, meat, like eating small crabs, shrimp, fish, shellfish and so on. Wide salinity, optimum salinity 5‰-15‰, slow growth above 21‰. The optimum water temperature is 23-26°C. When the water temperature is lower than 15°C, it is generally in the cave and does not feed outside. The lethal water temperature is below 10°C. A pH of 7.0 to 8.2 is appropriate, requiring a dissolved oxygen level above 4.0 mg/l.
Second, fish pond conditions and structure
Chinese Wudang pupa is a wide-salinity fish with an optimal salinity of 5‰-15‰. If the salinity is too high (above 25‰), the growth of fish is slow and susceptible to disease, so the best choice for fish ponds In estuaries or harbors and coastal areas where fresh water is abundant. Fish ponds are generally sterilized after draining water, and are easy to operate. The area is generally 0.5-1.5 mu. It is appropriate to use stone-based ponds and sand-filled ponds. The water should be flat and convenient for water injection. The water depth is about 1.5 meters. Fish tanks, tiles, large-caliber bamboo tubes or grey plastic tubes can be used as inhabitants in the fishponds, commonly known as fish houses. There are holes or seams on the side and top of the fish house to facilitate fish movement.
三ã€Preparation of ponds before transplanting
Before putting the seedlings, the pond must drain water. After dredging, exposure to the bottom of the pool dry, after exposure to lime per acre 100-150 kg or 5-10 kg of bleach disinfection. After 3-5 days, concealed objects such as tiles and gray plastic pipes are laid at the bottom of the pool, and then the water is filtered with a 40 mesh net, the water depth is 60-80 cm, and ammonium carbonate 0.5-1 kg/mu and superphosphate 0.05 are applied. 0.1 kg/mu fertilizer water.
Fourth, the stocking of fry
Fertilizer 3-5 days after the fish can be put, put the seedlings must be put fry before the test of water for more than 12 hours, no problem in order to put seedlings. The fish fry before entering the pond can be bathed with 5ppm potassium permanganate solution for about 5 minutes. Be careful to put the fish into the pond from the surface of the pond as soon as possible when it is put into use. When the fish are killed, disabled and disabled, the fish fry size is 40-60. / kg, 150-250 kg can be stocked per mu.
V. Feeding management
1, bait and feeding
Chinese Wutang oysters like to eat fresh or chilled small junk fish, shrimp, crab, shellfish and so on. For rotting odor or bone sting more than the bait do not feed, because the bone sting more bait will pierce the fish's stomach, prone to gastroenteritis, bad food will pollute fish ponds. The fry stage is fed 1-2 times a day, and the adult stage is fed once a day or every other day. Feeding amount depends on the number of fish, feeding, water quality, water temperature, weather, etc., to determine the amount of each feeding, in order to avoid bait polluting fish ponds, the general amount of feeding is 6% -12% of the total fish weight, It is better to eat basically after feeding for 40 minutes. The bait coefficient is 5-7.
2, water quality management
The requirements for water quality are not very strict in China Wutang, but the pond water must not be too turbid. It is generally required to thoroughly change the water once a week. If the salinity is high (more than 15 )), appropriate fresh water is injected. Every 10-15 days, 5-10 kg/mu of quicklime or 0.4-0.5ppm strong chlorine or 1-1.2ppm bleach shall be splashed once.
3. Disinfection and disinfection in the breeding process
The breeding period of Chinese Wudang pupa is longer. During the breeding process, residual bait and excrement are deposited in the fish house. There is also foreign seawater with viruses, bacteria and other substances. If it is not cleaned and disinfected in time, it will cause fish disease. Or make the fish grow slowly. The fish house should be cleaned once every two months. The specific method is to drain the fish ponds, catch all the fish first, use the plastic film mats in a cool and ventilated place, and then open up the hidden inhabitants in the pond. Weeds and other debris should be cleaned up, treated with disinfectant, and then moved to a new location to house the fish house, followed by fresh seawater injection. Weighing the total weight of the fish and then put it into the pond to facilitate accurate control of the amount of feeding this year, and to find the diseased or injured fish, we must promptly separate and treat.
4, heatstroke and wintering
In the high temperature season, especially in the hot sun, it is necessary to maintain a water depth of 1.5 meters or more and the fish houses are numerous and small so that the fish can be dispersed. In winter, when the water temperature is below 15°C, it is generally not for feeding, and it begins to die below 10°C. Before winter, it is necessary to strengthen the nutrition and fattening and move the fish to sheltered or muddy ponds. The fish house can be thickened. Cover it with a layer of mud.
5, get listed
Chinese Wutang can raise the weight to more than 150 grams and can be listed on the market to catch up and stay small. However, it should try to avoid the season of other aquaculture products listed in October-November in order to sell a good price.
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