Macrobrachium Shrimp and Green Shrimp Shrimp Culture Technology
I. Breeding conditions and supporting preparations 1. The area for pond preparation is 5-30 mu and the water depth is about 1.5m. The water source is free of pollution, and the drainage is convenient. Electricity and land and sea transportation facilities. At the end of one culture cycle, the pool water was drained and the surface silt was removed to dry and hard cracked. 2 weeks before seeding, use drugs to disinfect, and filter water before 1 week before seeding. 2. Supporting Facilities Each 3 mu of water surface is equipped with 1 ZengZi oxygen machine, and 1 set of pump pump is installed at the inlet. In order to desalt M. rosenbergii, the corner of Shrimp Pond shall be stopped with color stripe cloth as a holding pool. 3, time convergence from the beginning of November to the end of April of the year for the shrimp feeding period; early May disinfection of clear ponds, from mid-May to early June to put the Penaeus vannamei or Macrobrachium rosenbergii shrimp, from mid-June to mid-October Roche During the shrimp farming period, fishing is started in mid-October and fishing is completed at the end of the month. Teng Tong disinfection is used for the next cycle. 4, shrimp preparations for young shrimp can be acquired from other ponds in the market specifications of young shrimp, in order to target, in the corner of Datang or one end of the area accounting for about 3% of Datang pond, stocking Husband and broodstock breeds from self-developed young shrimp. Second, aquaculture operating technology points 1, seed stocks of Macrobrachium Macrobrachium praecox purchase healthy virus-free desalination of shrimp, specifications above 1.2cm, acres put 2-33.5 million. Green shrimp seedlings size 1-1.5cm or per pound of more than 300 juvenile shrimps, acre seedlings 2-3-30,000 tails or juvenile shrimp 3-5kg, while polyculture tail weight 100g or so cockroach, squid 50-100. 2. The protein content of feeds fed by Macrobrachium rosenbergii is in the range of 20% to 35% (35% to 30% for larval shrimp, 25% to 20% for middle prawn and commercial shrimp), and the daily feed amount is shrimp body weight. The 3%-7%, feeding 2-3 times a day, mainly in the evening feeding. Less than 2mm of food pre-granules, 3 - 4mm in the middle and later stages, later fed some small fish, snails, clams, clams and other animal raw materials. When the temperature of water in winter and spring is low, fresh shrimp can be fed once a few days in the sunny place, and the growth period can be fed by 3% to 5% of the body weight of the shrimp. As the natural food bait in the proliferation tank, the main fertilizer is mainly used to make the water yellow green or dark brown. 3, water quality regulation of water quality indicators: pH value remained between 7.6-8.3, dissolved oxygen above 5mg/L, transparency remained between 25-35em. Appropriate fertilization is based on the fat and water conditions of the pool, and the method of applying less fertilizer and more fertilizer is used, and new water is regularly added, and water is changed as necessary. During the growing season, the aerators were opened twice a day and each time they were turned on for about 2 hours. 4, daily management adhere to the morning and evening patrol ponds, inspection and observation of shrimp pond water environment changes, shrimp activities and feeding, whether there is shrimp disease, shrimp pond leakage and whether the enemy harm, etc., found problems and take appropriate measures in a timely manner. In order to prevent disease of Macrobrachium rosenbergii, the following measures can be taken: 1. When the shrimps are stocked, they should be bathed with formalin for 2-3 minutes. 2. During the growth period, once every 15-20 days, 1 bromochloroheine should be used to disinfect the whole pool. 3. Use photosynthetic bacteria once every 20 days during cultivation. 4, in the feed regularly add a certain amount of allicin, multivitamins, shrimp kingfisher and other drugs. 5. Shrimp harvesting Macrobrachium praecox uses nets for fishing. When harvesting in small quantities, shrimps can be caught by nets such as cages and dip nets, and at the same time, they must be caught, transported and sold. When the price of shrimp rises after the Spring Festival, cages, dip nets, trawls, and other tools are used to catch shrimps and they are listed on the market several times during the breeding period. Third, a typical example of Pan City, Yancheng City, Jiangsu Province, Ho Bridge Ni Haiyu (0515-8461976) in 30 acres of fish ponds using this model, the first to deliver 90,000 shrimp prawn Macrobrachium, capture shrimp 6180kg, mu level 206kg; In the second stage, 300,000 young shrimps were placed, 612.24 kg of shrimp were harvested, and 20.41 kg of Muping. 2500 fishes of carp and carp were fed and 1,650 kg of adult fish were caught. Production value: Macrobrachium rosenbergii 120510 yuan, freshwater shrimp 1,8367.2 yuan, quail and squid 4,950 yuan, a total of 143827.2 yuan, Muping 479,424 yuan. Cost: 20,200 yuan for seedlings, 30,000 yuan for feed, 8,250 yuan for pond rent, 10,500 yuan for wages, 5,400 yuan for energy, 3,300 yuan for drugs, 2,850 yuan for depreciation, 750 yuan for tools, 1200 yuan for other items, totaling 82,450 yuan, and 2,474.33 yuan per mu. Gross profit: 6,1377.2 yuan, Muping 2,049.91 yuan.