South American white prawn desalination seedlings breeding
2019-07-21 12:02:33
The South American white prawns are cultured with dilute seedlings, which have the characteristics of low feed coefficient and high yield and benefit. It is a development direction for South American white prawns to obtain high breeding efficiency.
Arrangement of the first pass: In early April, a small pond is surrounded in a pond, and a plastic greenhouse is used to insulate and dilute the early-stage seedlings. The salinity is 3‰. After 40 days, when the temperature of the large pool is kept above 22°, the shrimp is placed in the large pool. Keep for 60 days for sale. The second step: In the middle and early July, the first 2 larvae of the larvae should be desalted in the pool, cultured to 3 cm or more, put into large ponds for feeding, and put on seedlings in the middle and early August, and sold after 80 days.
Aquaculture Technology (1) Pond Requirements. Each pond generally has an area of ​​5 acres. In mid-late and late July and mid-late July, 60 kg of clear lime is used for disinfection of the surface of water per acre. During the cultivation, the water depth is 0.5~1.7 meters.
(2) shrimp specifications. Shrimp seedlings are desalinated shrimps with a body length of 0.5-0.7 cm. The first shrimp seedlings were cultured in a greenhouse to a depth of 3 cm or more and placed in a large pool with 20,000 tails per acre. The second aphid seedlings were cultured in cement tanks to a height of 3 cm or more and 25,000 tails per acre.
(3) Equipment configuration. In general, a 2.2 kW blower is installed in a greenhouse with a pond area of ​​400 square meters. Aeration sand heads are connected with PVC plastic pipes and rubber hoses and evenly discharged into the pond. The average distance from the pool bottom is 30 cm.
(4) feed feeding. The entire process was fed with P. vannamei pellet feed. The first feed coefficient was 0.82 and the second feed coefficient was 0.89.
(5) Improve water quality. Use Bacillus subtilis biologics to improve water quality.
The first phase of the benefit analysis began in mid-July. The total output was 1100 kilograms, 30 yuan per kilogram, the total output value was 33,000 yuan, the total cost was about 11,250 yuan, the total profit was 21,750 yuan, and the average profit per mu was 4,350 yuan. The second time in late October, the total output of up to 1200 kg, 20 yuan per kilogram, per mu output value of 24,000 yuan, the total cost of 11,100 yuan, the total profit of 12,900 yuan, average profit of 2,580 yuan per mu. The total sum of the two acres is 6930 yuan.
Arrangement of the first pass: In early April, a small pond is surrounded in a pond, and a plastic greenhouse is used to insulate and dilute the early-stage seedlings. The salinity is 3‰. After 40 days, when the temperature of the large pool is kept above 22°, the shrimp is placed in the large pool. Keep for 60 days for sale. The second step: In the middle and early July, the first 2 larvae of the larvae should be desalted in the pool, cultured to 3 cm or more, put into large ponds for feeding, and put on seedlings in the middle and early August, and sold after 80 days.
Aquaculture Technology (1) Pond Requirements. Each pond generally has an area of ​​5 acres. In mid-late and late July and mid-late July, 60 kg of clear lime is used for disinfection of the surface of water per acre. During the cultivation, the water depth is 0.5~1.7 meters.
(2) shrimp specifications. Shrimp seedlings are desalinated shrimps with a body length of 0.5-0.7 cm. The first shrimp seedlings were cultured in a greenhouse to a depth of 3 cm or more and placed in a large pool with 20,000 tails per acre. The second aphid seedlings were cultured in cement tanks to a height of 3 cm or more and 25,000 tails per acre.
(3) Equipment configuration. In general, a 2.2 kW blower is installed in a greenhouse with a pond area of ​​400 square meters. Aeration sand heads are connected with PVC plastic pipes and rubber hoses and evenly discharged into the pond. The average distance from the pool bottom is 30 cm.
(4) feed feeding. The entire process was fed with P. vannamei pellet feed. The first feed coefficient was 0.82 and the second feed coefficient was 0.89.
(5) Improve water quality. Use Bacillus subtilis biologics to improve water quality.
The first phase of the benefit analysis began in mid-July. The total output was 1100 kilograms, 30 yuan per kilogram, the total output value was 33,000 yuan, the total cost was about 11,250 yuan, the total profit was 21,750 yuan, and the average profit per mu was 4,350 yuan. The second time in late October, the total output of up to 1200 kg, 20 yuan per kilogram, per mu output value of 24,000 yuan, the total cost of 11,100 yuan, the total profit of 12,900 yuan, average profit of 2,580 yuan per mu. The total sum of the two acres is 6930 yuan.
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