Development of shrimp industry in the United States (10.11)

OA show ('918 '); according to relevant reports, although there are not many shrimp areas in the United States, domestic consumption mainly depends on imports, but the output per unit area is better Generally, 2.25 tons of shrimp can be produced per hectare, with an income of 18000 US dollars, equivalent to 150 kg per mu, with an income of 1200 US dollars G3X shrimp are raised in the soil pond above the high tide line in the United States There are two kinds of shrimp: fine culture and semi fine culture The main difference is that the water body is mechanically aerated The dividing line of shrimp fry per hectare is 300000 A semi precision shrimp farm with a scale of more than 300 hectares should include a pumping station to lift the sea water to the channel leading to the central reservoir, with a daily exchange capacity of 2-15% After more than 180 days of cultivation, the survival rate of shrimps can reach 125000 (i.e the survival rate is more than 40%), the average output per hectare is 2.25 tons (i.e 150 kg per mu), and then processed into 1.5 tons of decapitated shrimps with a specification of 36-40 per pound According to the market price of 5.5 dollars per pound (453.6 g per pound), the income is 18000 dollars per hectare In order to avoid the introduction of pathogens into G3X, they mainly used wild female and male parent shrimps caught in shallow water as parents to hatch and cultivate healthy shrimps A pair of parent prawns can produce 500000 fertilized eggs, become nauplii one day after hatching, and then grow into seedlings 14 days with micro running water in the water lees After 15 celestial bodies are cultivated for about 1 cm, they can be released in the pond Generally, there are more than 20000 seedlings per mu The production cost, breeding cycle, growth and survival of prawn should be judged correctly in advance by management personnel to achieve the purpose of high yield and efficiency White spot virus disease is the main disease of shrimp It is impossible to eliminate it completely We should try our best to reduce the harm of virus and bacteria by improving the breeding environment and preventing water pollution.