Key points of management of vannamei culture in summer

Release Time:

2023-04-11

Summer temperatures are relatively high, and sometimes accompanied by thunderstorms, so how to manage the north and south white shrimp in the high temperature stage? Let's learn the five points of summer management of North and South white shrimp summarized by experts. First, the implementation of water temperature control oxygen regulation With the increase of water temperature and the growth of vannamei shrimp, the water depth should be continuously increased, especially in the middle and late stages of aquaculture, the water level must be increased to 1.8 meters ~ 2 meters, and the high temperature period should be maintained above 2.2 meters. In the high temperature period, the whole drainage and full irrigation should be implemented, and the water temperature should be controlled within 30 °C, so that the transparency of the water can reach 35 cm, so as to facilitate the rapid growth of South American white prawns, high quality and high yield. When changing the water, it is best to use a 60-mesh mesh at the water inlet to filter the water to prevent the invasion of tiny organisms containing the outbreak epidemic virus of vannamei shrimp. Second, the increase of summer rain in anti-stress, rain makes the shrimp pond water quality physical and chemical indicators (pH value, dissolved oxygen, salinity, etc.), algae phase, fungus phase and so on have a large change, resulting in strong stress on shrimp, so it is particularly important to improve the anti-stress ability of shrimp. You can splash degrading spirit + stress calm before the rain to ensure that the shrimp survive the rainy period safely. Third, feed high-quality feed and control the amount of feed should be fed fresh and high-quality vannamei shrimp full-price feed. In summer, shrimp have a large amount of food, fast digestion, and an increase in daily feeding, so a small number of meals should be adopted. Shrimp have the habit of diurnal and nocturnal emergence, frequent nocturnal activities, and strong appetite; Lurking during the day, appetite weakened. Therefore, the bait is mainly fed before sunrise and after sunset, accounting for 70~80% in the morning and evening, 20~30% during the day, and try to avoid high temperature time. The daily feeding amount should be flexibly controlled according to the weather, water quality, health and activity of shrimp. Scientific feeding, less in the morning, more in the evening; Invest less at low tide and more at high tide; Cast less when a large number of shrimp molt, and more when growing normally; Spoiled bait is not cast, ring ditches and deep water are not cast. Fourth, beware of shrimp disease harm high temperature season, the amount of bait should not be too much and too concentrated, so as to avoid the bait deterioration and smell, resulting in pollution of water quality, especially fresh bait, in high temperature weather is very easy to deteriorate, resulting in South American white shrimp poisoning death. In order to reduce the water pollution of the shrimp pond, it is necessary to change the water frequently, and secondly, pay attention to thinning and rationally adjust the density of the shrimp group, so that the shrimp group has a certain space for activity. 5. To prevent the floating head of P. vannamei from falling to the lowest point of the day before midnight and dawn, when P. vannamei is most prone to floating. If it is found that the mysis shrimp, white shrimp floating head, small miscellaneous fish gathering to the pond and other phenomena, it is necessary to start the aerator in time or constantly change the water to increase the dissolved oxygen content of the shrimp pond. Usually, pay attention to removing the silt and debris in the shrimp pond to ensure that the water quality is fresh and good, so as to prevent the death of the floating head of vannamei shrimp. Author: Rugao Aquatic Products Technical Guidance Station Wu Xinxin In summary, it is the management points of the summer high temperature season of North and South White Shrimp, and aquaculture friends can refer to more, and then you can also continue to talk about what problems you have encountered in breeding North and South White Shrimp.

First, the implementation of water temperature control oxygen regulation With the increase of water temperature and the growth of vannamei shrimp, the water depth should be continuously increased, especially in the middle and late stages of aquaculture, the water level must be increased to 1.8 meters ~ 2 meters, and the high temperature period should be maintained above 2.2 meters.

In the high temperature period, the whole drainage and full irrigation should be implemented, and the water temperature should be controlled within 30 °C, so that the transparency of the water can reach 35 cm, so as to facilitate the rapid growth of South American white prawns, high quality and high yield.

When changing the water, it is best to use a 60-mesh mesh at the water inlet to filter the water to prevent the invasion of tiny organisms containing the outbreak epidemic virus of vannamei shrimp.

Second, the increase of summer rain in anti-stress, rain makes the shrimp pond water quality physical and chemical indicators (pH value, dissolved oxygen, salinity, etc.), algae phase, fungus phase and so on have a large change, resulting in strong stress on shrimp, so it is particularly important to improve the anti-stress ability of shrimp.

You can splash degrading spirit + stress calm before the rain to ensure that the shrimp survive the rainy period safely.

Third, feed high-quality feed and control the amount of feed should be fed fresh and high-quality vannamei shrimp full-price feed.

In summer, shrimp have a large amount of food, fast digestion, and an increase in daily feeding, so a small number of meals should be adopted.

Shrimp have the habit of diurnal and nocturnal emergence, frequent nocturnal activities, and strong appetite; Lurking during the day, appetite weakened.

Therefore, the bait is mainly fed before sunrise and after sunset, accounting for 70~80% in the morning and evening, 20~30% during the day, and try to avoid high temperature time.

The daily feeding amount should be flexibly controlled according to the weather, water quality, health and activity of shrimp.

Scientific feeding, less in the morning, more in the evening; Invest less at low tide and more at high tide; Cast less when a large number of shrimp molt, and more when growing normally; Spoiled bait is not cast, ring ditches and deep water are not cast.

Fourth, beware of shrimp disease harm high temperature season, the amount of bait should not be too much and too concentrated, so as to avoid the bait deterioration and smell, resulting in pollution of water quality, especially fresh bait, in high temperature weather is very easy to deteriorate, resulting in South American white shrimp poisoning death.

In order to reduce the water pollution of the shrimp pond, it is necessary to change the water frequently, and secondly, pay attention to thinning and rationally adjust the density of the shrimp group, so that the shrimp group has a certain space for activity.

5. To prevent the floating head of P. vannamei from falling to the lowest point of the day before midnight and dawn, when P. vannamei is most prone to floating.

If it is found that the mysis shrimp, white shrimp floating head, small miscellaneous fish gathering to the pond and other phenomena, it is necessary to start the aerator in time or constantly change the water to increase the dissolved oxygen content of the shrimp pond.

Usually, pay attention to removing the silt and debris in the shrimp pond to ensure that the water quality is fresh and good, so as to prevent the death of the floating head of vannamei shrimp.

Author: Rugao Aquatic Products Technical Guidance Station Wu Xinxin In summary, it is the management points of the summer high temperature season of North and South White Shrimp, and aquaculture friends can refer to more, and then you can also continue to talk about what problems you have encountered in breeding North and South White Shrimp.

How to raise South American shrimp in summer

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How to raise South American shrimp in summer

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