The amount of new shrimp is very popular among consumers because of its delicious meat and high nutritional value. Based on the experiments in 1998, the author conducted a preliminary study on the high-yield and high-efficiency cultivation technology of new shrimp in brackish water in 1999. The results are as follows.
1 farming conditions
1.1 Pond condition test The pond is located in Wuyang County Fishery Industry Company, Hai'an County, Hai'an County. There are 11 rivers, covering an area of ​​82 acres, including 7 acres of ponds, 16 acres of ponds, and 2 ponds. 2m, water depth 1.8m, sand mud bottom, silt about 10cm, the pond into the drainage easy, each pool is equipped with an aerator.
1.2 Water for aquaculture Water from the center of the reclamation area in Hanoi is salt water. The salinity change is 3.5‰-7‰ without industrial pollution.
2 Main management measures and methods
2.1 Pond clearing and disinfection The culture ponds are structured ponds. Before the stocking of shrimps, the per acre is disinfected with 100 kg of lime, and the water is infiltrated into the water one week before the seedlings are injected. The water depth is 60-80 cm, and organic fertilizer is applied to ensure the water quality. After the shrimp enters the pond, there are enough palatability feeds to increase the survival rate of the culture.
2.2 Shrimp stocking on June 12 from Ningbo purchased a one-week decrement of new shrimp seedlings 1.88 million, specifications about 1.2cm, desalination salinity 3.5 ‰ similar to the aquaculture water salinity, with oxygen bags by 13 Hourly transportation to the field. Gently put into the pond, transport survival rate of about 90%. In July, 20 tadpoles were added per mu, with an average size of 400 g per tail.
2.3 Feeding Management
2.3.1 The feed is fed into the newly hatched shrimp seedlings to feed on natural baits, supplemented by splashing egg yolks, soya milk, etc., according to the growth conditions to change the size of the bait, from the opening material, prawn material, prawn material gradually The shrimps were converted into shrimps, which were fed twice a day, once each morning at 8:00 am and 18:00 pm, and fed 35% of the daily feeding amount in the morning and 65% of the daily feeding amount in the evening. The amount of feeding can be adjusted according to the shrimp's feeding speed and changes in water quality and climate.
2.3.2 Water quality management When shrimp enters the pond, 60-80cm of water is injected into the pond and gradually increases to 1.7m according to the change of the water color. Due to the serious water leakage in the cofferdam area, it is necessary to inject fresh water in due course, according to the changes in water quality. Regulation.
2.3.3 Disease prevention and treatment Every half month, use quicklime, strong chlorine extract, fish and shrimp safety, etc. to perform Quanchiposa, timely feeding virus spirit, allicin, oxytetracycline and other baits before the onset of the disease season. treatment.
3 results
After 5 months of breeding, they were arrested in mid-November and captured a total of 5,403kg of new shrimp, with an average yield of 65.9kg, an average size of 60 birds per kg, and an average daily weight gain of 0.11g.
4 Summary
4.1 The amount of new knife disease prevention and treatment of new shrimp should adhere to the principle of prevention, prevention and emphasis on governance, summed up the experience of two years, an average of half a month using quicklime, strong chlorine and fish and shrimp safety, in the length of 3 shrimp -4cm before the use of virus Ling, oxytetracycline, allicin and other baits to prevent the combination of external and internal use, the effect is ideal.
4.2 The amount of new shrimp grows quickly in brackish water, with an average daily weight gain of 0.11g. It has a large specification with an average price of 16.7g per animal. The market price is high. The supply of live shrimp is in short supply, but the new amount of shrimp has the habit of drilling sand and mud. The response is fast and good fishing techniques have yet to be further explored.
China Fisheries Network News
1 farming conditions
1.1 Pond condition test The pond is located in Wuyang County Fishery Industry Company, Hai'an County, Hai'an County. There are 11 rivers, covering an area of ​​82 acres, including 7 acres of ponds, 16 acres of ponds, and 2 ponds. 2m, water depth 1.8m, sand mud bottom, silt about 10cm, the pond into the drainage easy, each pool is equipped with an aerator.
1.2 Water for aquaculture Water from the center of the reclamation area in Hanoi is salt water. The salinity change is 3.5‰-7‰ without industrial pollution.
2 Main management measures and methods
2.1 Pond clearing and disinfection The culture ponds are structured ponds. Before the stocking of shrimps, the per acre is disinfected with 100 kg of lime, and the water is infiltrated into the water one week before the seedlings are injected. The water depth is 60-80 cm, and organic fertilizer is applied to ensure the water quality. After the shrimp enters the pond, there are enough palatability feeds to increase the survival rate of the culture.
2.2 Shrimp stocking on June 12 from Ningbo purchased a one-week decrement of new shrimp seedlings 1.88 million, specifications about 1.2cm, desalination salinity 3.5 ‰ similar to the aquaculture water salinity, with oxygen bags by 13 Hourly transportation to the field. Gently put into the pond, transport survival rate of about 90%. In July, 20 tadpoles were added per mu, with an average size of 400 g per tail.
2.3 Feeding Management
2.3.1 The feed is fed into the newly hatched shrimp seedlings to feed on natural baits, supplemented by splashing egg yolks, soya milk, etc., according to the growth conditions to change the size of the bait, from the opening material, prawn material, prawn material gradually The shrimps were converted into shrimps, which were fed twice a day, once each morning at 8:00 am and 18:00 pm, and fed 35% of the daily feeding amount in the morning and 65% of the daily feeding amount in the evening. The amount of feeding can be adjusted according to the shrimp's feeding speed and changes in water quality and climate.
2.3.2 Water quality management When shrimp enters the pond, 60-80cm of water is injected into the pond and gradually increases to 1.7m according to the change of the water color. Due to the serious water leakage in the cofferdam area, it is necessary to inject fresh water in due course, according to the changes in water quality. Regulation.
2.3.3 Disease prevention and treatment Every half month, use quicklime, strong chlorine extract, fish and shrimp safety, etc. to perform Quanchiposa, timely feeding virus spirit, allicin, oxytetracycline and other baits before the onset of the disease season. treatment.
3 results
After 5 months of breeding, they were arrested in mid-November and captured a total of 5,403kg of new shrimp, with an average yield of 65.9kg, an average size of 60 birds per kg, and an average daily weight gain of 0.11g.
4 Summary
4.1 The amount of new knife disease prevention and treatment of new shrimp should adhere to the principle of prevention, prevention and emphasis on governance, summed up the experience of two years, an average of half a month using quicklime, strong chlorine and fish and shrimp safety, in the length of 3 shrimp -4cm before the use of virus Ling, oxytetracycline, allicin and other baits to prevent the combination of external and internal use, the effect is ideal.
4.2 The amount of new shrimp grows quickly in brackish water, with an average daily weight gain of 0.11g. It has a large specification with an average price of 16.7g per animal. The market price is high. The supply of live shrimp is in short supply, but the new amount of shrimp has the habit of drilling sand and mud. The response is fast and good fishing techniques have yet to be further explored.
China Fisheries Network News
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