How to raise vannamei shrimp in seafood trucks

Clause. 1. A special shrimp transport vehicle is required, which is characterized by: live shrimp shipping barrels (generally cuboidal, with a volume ranging from 1 cubic meter) to keep warm and have a backup generator. Check the condition of the vehicle before shipment, replenish fuel, debug aeration equipment, etc.

Clause. Second, the shrimp is stopped for one day before shipment, one is to facilitate fishing (shrimp pot fishing method); Second, shrimp is transported on an empty stomach, and there is no fecal discharge, which is conducive to clean transportation water quality and reduces shrimp activity; At the same time, it should also be noted that sick shrimp and molting shrimp should not be shipped, they are weak and easy to die;

Clause. 3. According to the distance of transportation, calculate the weight of shrimp in each shrimp basket;

Clause. Fourth, the water temperature of shrimp transportation water quality should generally be controlled between 14 and 16 throughout the whole process, so that the shrimp semi-dormant transportation, to avoid high water temperature, shrimp activity, resulting in shrimp oxygen consumption increase and bruises. At the same time, spare ice cubes need to be added to the shrimp truck, and the water temperature and water level should be checked every two hours during transportation.

If the water temperature is high, add ice, and if the water level is low, find a nearby place to add water.

Clause. Fifth, Penaeus vannamei shrimp has poor adaptability to the new environment, especially freshwater vannamei shrimp. Therefore, it is not advisable to use all new water for transportation water, half of the shrimp pond water and half of the new water are used for seawater vannamei shrimp, and it is best to use all the original shrimp pond water for freshwater vannamei shrimp.

Clause. 6. Salinity of transportation water: According to the salinity of shrimp and shrimp ponds, it is better to add 1 to 2 kg of sea crystal to transport water, which is treated on a case-by-case basis. At the same time, after adding sea crystals, two hours before loading the shrimp, the aerator should be turned on in advance to allow the salt to fully dissolve in the transport water.

Clause. 7. Adjustment of transportation water: Before loading shrimp, "high activin" or "seawater element" and anti-stress drugs should also be added to the transportation water.

To achieve the above points, the survival rate of shrimp is at least 90%.

<> Litopenaeus vannamei shrimp can be raised. Litopenaeus vannamei shrimp shell thin body fat, meat delicious, nutritious and rich, is the most popular seafood in the market, in the world, China's shrimp exports have also formed a scale advantage. With the improvement of people's living standards and the further development of logistics, the market key bend area of Penaeus vannamei shrimp will continue to expand.

However, vannamei shrimp farming, like other aquaculture, is exposed to three major risks: markets, diseases and natural stall disasters.

<> the difficulty of the cultivation of whitening shrimp is moderate, its fecundity, adaptability and disease resistance are relatively strong, the temperature and dissolved oxygen requirements are higher, the breeding water temperature is 18-25 °C, the dissolved oxygen content is more than 5mg l, and its salinity allowable range is 2 pins back to -78.

1. Requirements for pond raising. The pond of breeding vannamei shrimp must reach a certain depth, usually the depth of the shrimp pond is about meters, to ensure that the shrimp pond has a good drainage system, which is convenient for the water change of the shrimp pond, and to ensure that the pond has sufficient water source, the water quality should be clean, and it contains sufficient nutrients to ensure the breeding needs of the vannamei shrimp, and finally, the shrimp pond should be equipped with aeration equipment to supply enough nutrients to the shrimp pond and improve the dissolved oxygen content of the shrimp pond, which can greatly improve the survival rate of the shrimp.

2. Sterilization of shrimp ponds. Before stocking shrimp seedlings, according to the living habits of Penaeus vannamei shrimp, the growth of special type points and the health and other problems in the shrimp pond after breeding, the shrimp pond is disinfected and sterilized, and the shrimp pond is added with an appropriate amount of quicklime disinfection one month before the shrimp seedlings are stocked, and the proportion of bleaching powder should be added to the shrimp pond seven days in advance, and a certain amount of water quality fertilizer can also be added to the pool, such as water and fertilizer treasure, etc., which can make the shrimp pond achieve sufficient nutrients and create a good living environment for the shrimp.

3. Shrimp seedling selection. Penaeus vannamei shrimp is living in the saltwater of South America, but after the introduction of freshwater aquaculture in China, so because the water of aquaculture is freshwater, when letting Liang choose shrimp seedlings, it is also necessary to choose the desalination treatment, to avoid the selection of shrimp seedlings, the shrimp is difficult to adapt to the freshwater pond environment, resulting in a large area of death, when choosing shrimp seedlings, according to the environment around the shrimp pond and the season special search slip guess point, etc., other questions that do not understand try to ask experienced breeding personnel, and at the same time in the selection of shrimp seedlings to grasp the market demand, Choose varieties with high market demand.

4. Water quality regulation. When breeding vannamei shrimp, it is not very easy to change the water, so the frequency of changing the water will be relatively low, we should strengthen the understanding of the water quality in the shrimp pond in the breeding process, study the changes in the water quality in the old water study pool before the water change, reduce the feed and other methods to ensure the cleanliness of the water quality, and according to the different water temperature changes in each season, grasp the changes in the four seasons, and take measures to prevent the impact of water temperature changes on shrimp when the water temperature changes, strengthen the regulation of water quality, and have a certain role in shrimp farming.

The water quality requirements for cultivated vannamei shrimp and the selection of shrimp ponds are all required

1. Water quality requirements for cultivating vannamei shrimp:

The natural habitat of Penaeus vannamei shrimp is a muddy seabed, with a water depth of 0-72 meters, a water temperature of 22-32, a salinity of 10-25, a pH value, dissolved oxygen greater than 4mg L, a transparent meter, and a water color of green or reddish-brown.

2. The farm is lower than the shrimp pond selection

Breeding site conditions: sufficient water source, good water quality, no pollution, good bottom quality (sandy loam or sandy soil is appropriate, silt 10-15cm), which is conducive to the growth of shrimp and reduce diseases. The soil is solid and easy to drain and irrigate.

The width of the pond embankment is not less than 2 meters, and it is best to have a bait platform along the pond embankment. The depth of the pond is about meters. The area of the shrimp pond is 5-10 acres, generally not more than 20 acres, rectangular or round, the pond embankment should be well protected, and the water inlet should be kept with the drainage outlet more than 20cm in height difference, so as to facilitate drainage.

Pond intake and drainage should be separated.

Penaeus vannamei has the advantages of strong vitality, wide adaptability, strong disease resistance, rapid growth, low requirements for feed protein content, high meat yield, and long survival time out of water, which is suitable for intensive aquaculture and high breeding efficiency.

Preparation before seedling

1. Shrimp pond finishing: Generally, the shrimp pond will be drained after harvest, and the subsoil sludge is 3-10cm thick, so that the soil is oxidized, and then 100-150kg of quicklime is applied. If the subsoil sludge reaches more than 10-20cm, the subsoil is treated according to the above method and then the subsoil is mechanically ploughed to make it cracked.

The sun bath ranges from 15 to 30 days. Even in winter, the empty pond is dried for 45-60 days. After the shrimp pond is finished, rinse the tide inlet water 3-4 times until the shrimp pond is free of rust water.

2. Clear the pond: The purpose of the clear pond is to kill harmful organisms, including fish, shrimp diseases and bacteria. 15-30 days before the seedling, 20-30cm of water intake, the use of shrimp to remove fish net 1ppm with water splashed in the whole pool.

Two days later, the whole pool was sprinkled with dibromohydantoin (granular type) mixed with water per mu, and then the pool was sealed for 2-3 days. For the newly built shrimp pond, it should be soaked in water and rinsed 2-3 times, and then disinfected; For shrimp ponds renovated from old ponds or fish ponds, the ponds need to be exposed to the sun, and the silt and weeds should be cleaned up and then disinfected.

3. Water intake: 2-3 days after the drug is cleared, the gate can be opened to enter the water, and a filter screen is set at the inlet gate to filter seawater, and the filter screen is made of 60 mesh nylon or nylon sieve silk. The first inlet of water should be 30-40cm to facilitate the cultivation of bait organisms, and then gradually increase the water level.

4. Cultivating bait organisms: after thorough pond cleaning, filter the inlet water with a 60-70 mesh sieve, and use 2-3kg of three-effect fertilizer water essence + 1kg of urea per mu for 50-60cm per mu, and use 250g of compound bacillus to inhibit the growth of mixed algae when the water body is yellow-green or yellow-brown, and seedling breeding can be carried out at this time.