Bamboo shell fish school name cloud spot Jiantang, is a subspecies of guppilla, Tanggu Branch, Jiantang genus, body shape like bamboo shoots, hence the name. Produced in Southeast Asia, the largest individual 5-6 kg, delicate meat, delicious taste, is a rare freshwater fish species. Shell fish live in the bottom layer of mud and micro-flowing mud and grass, hi burrowing, sexual docile, not good jump, resistance to hypoxia. Temperature 15-35°C, optimal temperature 25-30°C, dead below 10°C; can grow in acidic water with pH 5 and brackish water with salinity of 10 ,, mature sexually in the second age, from April to November Reproductive period. Juvenile fishes use microbes in the water to feed on small fish and shrimps. They have a strong ability to fight hunger. They can feed for many days at a time. Artificial breeding can feed small trash fish and compound feeds. Places where wintering facilities are available in southern China can be used. Farming. In Doumen District, Zhuhai City, Guangdong Province, 10,000 2.5 cm fish species were introduced from Cambodia in September 2001. After wintering until October 2002, the average individuals reached 400 g and the maximum was 550 g. The number of hatched animals was artificially hatched. Millions of fish fry have explored experience in promoting culture. The methods of adult fish farming are described below. Pond ponds are not strictly required for the culture of bamboo shell fish, but from the convenience of overwintering coverage, daily management and product harvesting, the pond area is suitable for 1-6 mu, the water depth is more than 1.5 meters, there is less sludge, there are water exchange conditions, water quality good. The water surface can be properly put into some narcissus or duckweed, and the fish house made of cylinders, old tires and other objects placed at the bottom of the pond is suitable for the light-proof and burrowing characteristics of bamboo shellfish. Before disinfection, routine disinfection is required. There are no batches of artificial seedlings for seedlings that have been put into the shell fish species in the country. Fish species are mostly purchased from Southeast Asian countries. Since shellfish are not cold tolerant and the temperature difference between regions is large, the fish species should be released after the “clear weather†when the weather is stable and the water temperature rises above 20°C. The length of the fish species should be more than 3 cm, and 2000-3000 tails should be placed per acre, and 5% salt water or 10 g/m3 potassium permanganate solution can be used for disinfection and disease prevention before releasing the seed. The fish species were kept in a corner of the pond for 2 to 3 weeks with a dense mesh, and the concentrated feeding increased the survival rate, and later the fish was released to stocking in Datang. The shellfish were carnivorous fish, and they were fed with rotifers and Cladocera at the seedling stage. They began to prey on fish and shrimp seedlings and small insects as long as 2 centimeters. Artificial hatcheries in Southeast Asia were fed with oysters during the cultivation of fingerlings. Salmon flowers. Therefore, artificial ponds should be cultured with a certain amount of micro-organisms before they are put into the pond. The fish should be given a proper amount of fish, and the fish should be provided with sufficient food to prevent food from interfering with each other due to lack of food. After the fishes are concentrated and enter the big pond, they can continue to feed the fry (or shrimp) of suitable size until they are cultivated. They can also tame the chilled fish until the fish is grown. Shoot shell fish are usually still in the water, less swimming, consumption of physical fitness, eat a meal can not eat for many days, the feed coefficient is about 5 or so. The daily feeding amount is about 3% of the fish's body weight, which is divided into two groups: breakfast and dinner, and the shellfish are frequently active at night. Therefore, the feeding amount accounts for 1/3 in the morning and 2/3 in the evening. When chilled and mixed fish are used as feed, the fish stage should be splashed with fish slurry in water. The fish species will be imported into Datang Farming, and the fish paste shall be mixed with appropriate amount of flour and dipping material to form pellets; when it enters into cultivation, it can be cut into pellets and lumps at the later stage. Feeding should be provided with a fixed food table. The food table can be made of bamboo pieces and square meters of nets measuring 1.1-meters. It is placed on the bottom of the pond and the water surface is inspected periodically to observe the food intake, fish health status, growth rate and discretion. Increase, decrease feed, and clean up residual baits. Water quality management and sub-tank culture The production of bamboo shoot shellfish can survive and grow normally in the seedling stage, and later management is easier. Shellfish fish tolerant to hypoxia, the current density of hundreds of kilograms per mu does not have to use aerators, water to partial fat, green cool as well, pH above 7. In the later period of cultivation, appropriate amount of water can be changed or 5-10 kilograms per mu of lime can be splashed every month to keep the water quality stable. After the fingerling period, polyculture of 20-30 tail flowers, white plover and 30 squid per acre will help to adjust the water quality and increase the breeding income. After the midseason breeding of bamboo shoot shellfish, especially after the winter, the weather is warm, and there should be at least one more sub-tank process. The purpose is to separate specifications, avoid size grabs and accelerate growth, and to clean up and disinfect ponds to reduce the disease. The specific method is to dry up the fish and put it on a prepared container or mulch on the side (as long as it is kept cool and moist, it can survive for a long time), and then open it in the pond that has been sterilized according to size. The breeding cycle and the overwintering bamboo shellfish grow slowly in the winter and spring, and enter the summer and autumn hot weather at a faster speed. We found in the culture that the average period from September to next June was only 150 g/tail, and it was 10 The monthly growth rate is as fast as 400 g/tail. Although the product specifications generally reach 200 g, the economic breeding period should be more than 1 year. The wintering method is required for breeding bamboo shoot shellfish. Three types of overwintering methods are available: 1 New seedlings will be put in April-May. Some of the products that can be listed at the end of the year will meet the specifications of the commodity, and the rest will continue to be raised for winter until August of the next year; After stable survival, it entered the winter season, and it was harvested before December of the following year. In March, the seedlings purchased in March were concentrated in the overwintering standard and stockpiled in ponds in April-May in the following year. The overwintering water temperature of bamboo shellfish is required to be above 15°C. It is safer and more economical to use plastic sheds of Macrobrachium rosenbergii in winter in Guangdong. During wintering period, it is necessary to reduce feeding and strengthen water quality management, and use beneficial bacteria to reduce ammonia nitrogen in water. Disease prevention and treatment of bamboo shell fish is currently found fewer diseases, mainly watery mildew, trichoderma, small measles and enteritis and other common diseases. The method of prevention and treatment is mainly to prevent the seedlings from being bred at too low water temperature, and to disinfect the water regularly during the breeding process. 10 kg of quicklime or 0.8 g/m3 of strong chlorine can be poured in the whole pond per acre; the enteritis is mainly caused by feed corruption. Feed the deteriorating feeds, especially the food table, to clean and disinfect regularly, and regularly feed yeast and oxytetracycline. The Doumen area had done allergy tests for various conventional antiseptics during trials and no adverse reactions were found. Product harvesting and transportation The harvest of bamboo shoot shellfish is divided into large catching, small catching, selection on the market and dry ponds. In the breeding process, some straight pipes with a diameter of 10-20 cm and a length of about 1 m are placed on the edge of the pond. There are many small holes in the straight pipes. Use the characteristics of bamboo shell fish like burrowing. The orifices flow out and the products in the cartridge that meet the specifications are selected. Shoot shell fish have the habit of drilling mud, dry ponds should pay attention to catch clean. The shell fish can keep moist and cool after leaving the water and can survive for dozens of hours, which is very beneficial to the transportation of fresh products. Products shipped from Southeast Asia are individually packaged with moisturized and oxygenated plastic bags. Each box is tens of kilograms and survives well after 20 hours. Market prospects and aquaculture efficiency Bamboo shellfish has not been widely promoted in the country. Products have to be imported from Southeast Asia, and there is no large-scale farming in Southeast Asia. Most of them are natural fisheries, and their production is limited. According to a survey, the Guangzhou Huangsha Aquatic Products Wholesale Market imports about 1,000 kilograms of bamboo shellfish every day. Half of them are imported outside the province and half are distributed to restaurants in the province. The price per kilogram is maintained at about 120 yuan for many years, generally in the market. Rare to sell. Last year, when wholesalers discovered that Doumen intended to develop aquaculture, they said they would acquire it for a long period of time at a price of no less than RMB 70/kg. Since bamboo shoot fish has not produced large quantities of seedlings in China, it is generally estimated that there will not be a large number of products listed in a few years, and its price is relatively stable. According to the trial situation of Doumen, the yield per mu can reach 250-500 kilograms, and the cost per kilogram is within 30 yuan.
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