1, pond requirements

(1) Taking Penaeus vannamei as an example, the pond depth must be around1.8m..

(2) The pond must be equipped with a complete water intake and drainage system, and there must be sufficient water resources around it. The nutrients in the aquaculture water must meet the nutritional needs of Penaeus vannamei.

(3) In order to increase the oxygen-increasing equipment with fixed power in the pond, oxygen must be supplied to the pond within the specified time to ensure sufficient dissolved oxygen in the pond.

2. Greenhouse framework

(1) The protagonist of greenhouse frame is "human", which can not only reduce the construction difficulty, but also save building materials.

(2) The structure of bamboo-wood frame can be used to build a greenhouse, which is convenient to disassemble, and the bamboo-wood frame can be recycled.

(3) The film thickness should be 0.6-0.8mm, and it should have good light transmittance, and the color of the film should be white as far as possible.

3. Sterilization

(1) Shrimp seedlings must be disinfected before they are released. Quicklime can be added to the pond for disinfection about 25 days before the shrimp seedlings are officially released.

(2) After being disinfected with quicklime, bleaching powder with appropriate concentration must be added to the pond 1 week in advance, and appropriate fertilizers, such as chicken manure, can also be added.

4. Management of shrimp

(1) Select shrimp fry

① Because the water in the pond is usually fresh water when cultivating Penaeus vannamei in greenhouse, it is necessary to choose the desalted prawn species.

② According to the breeding conditions of greenhouse ponds, shrimp species that can adapt to the environment of greenhouse ponds should be selected, and shrimp seedlings with more sales in the market should be selected as far as possible.

(2) carrying out non-toxic detection

After selecting shrimp seedlings, it is necessary to carry out non-toxic testing, so as to ensure that all indicators of shrimp seedlings can meet the specified requirements and avoid the spread of viruses among shrimp seedlings.

(3) stocking

(1) Before stocking, be sure to put the bag with shrimp fry in the pond for about 15 minutes, so that the shrimp fry in the bag can adapt to the water temperature and basic environment of the pond.

(2) After adaptation, unpacking and putting into the pond in batches can reduce the stress reaction of shrimp seedlings and avoid a large number of death of shrimp seedlings due to inadaptability to the environment.

(3) The number of cultured shrimp seedlings must match the size of the pond. Generally, you can put a fixed grid in the pond, and then put a fixed number of shrimp seedlings in each grid to prevent the shrimp seedlings from swimming around.

5. Feeding management

(1) According to the growth of prawns, feed them reasonably, ensure that the amount of feed fed can meet the growth needs of prawns, and never overfeed them, otherwise it will cause waste and deficiency, and also affect the growth of prawns.

(2) The feeding time must conform to the feeding habits of prawns, so as to avoid the waste of bait and reduce the impact of excessive bait on the water quality of the pond.

6. Adjust water quality

(1) According to the change of water quality, the water quality must be adjusted in time. By monitoring the water quality at a fixed frequency, the changes of the pond water quality can be grasped in time, and then the pond water quality can be effectively adjusted by reducing the feeding.

(2) The water temperature can be adjusted in time according to the season. When the water temperature changes, corresponding measures must be taken to stabilize the water temperature to avoid the fluctuation of water temperature affecting the growth of prawns.

7. Adjust dissolved oxygen in water

(1) According to the specific dissolved oxygen content in water, the dissolved oxygen content can be adjusted to a suitable position in time.

(2) Generally, oxygen can be injected into the pond water through the oxygen pump in the pond, and the dissolved oxygen content in the water can be detected by the dissolved oxygen content detection device, and oxygen supply can be stopped when the dissolved oxygen content reaches the standard.

(3) Pay attention to the different dissolved oxygen content in water in different seasons, and be sure to adjust the dissolved oxygen flexibly.

8. Prevention and treatment of diseases

(1) After a period of culture, a lot of silt and bacteria will accumulate in the pond. If the silt and bacteria are not cleaned up in time, not only the water quality of the pond will deteriorate, but also diseases will break out. Therefore, it is necessary to clear the pond in time, improve the water quality and reduce the occurrence of diseases.

(2) Grid feeding can be adopted, which can effectively isolate viruses, avoid infection among prawns and reduce the disease area.

(3) According to the growth of shrimp seedlings, the types of infected diseases can be determined, and the right medicine can be used to improve the quality of prevention and treatment of shrimp seedlings diseases.

In the process of shrimp culture, water should be changed regularly to ensure clean water quality. When the dissolved oxygen in the water is insufficient, the aeration equipment should be turned on in time to ensure that the shrimp has enough oxygen to grow. Moreover, it is necessary to control the transparency and PH of the water body, reduce the change of PH value, and avoid the excessive change of pH value from affecting the growth of shrimp.

Source: shrimp culture technology and methods.