Measures to prevent heat for shrimp and fish in summer

Hot weather will cause the water environment of shrimp and fish to increase and decrease suddenly. This impact can stimulate the skin nerves, causing the loss of the ability to regulate the activities of organs, causing disease and possibly causing mass death of shrimp and fish. Here are some experiences in sun protection for shrimp and fish.

For rice field fish farming:

- Ensure adequate water supply and avoid water leakage by compacting the banks.

- Dig ditches and create depressions in the field as shelter for fish on long hot days and also as a place to gather and feed fish, harvest fish. If the field is small, dig one depression, if the field is large, dig 2-3 depressions in the middle or edge of the field. The depression area accounts for 2-3% of the total field area.

- A system of plus (+) shaped or rectangular ditches to connect between depressions. The ditch is 0.5m wide and about 0.5m deep.

For ponds and lakes for raising fish and shrimp:

- Need to clean thoroughly, dredge mud, leave only moderate amount of mud, then dry the pond bottom thoroughly in the sun before putting it into farming.

- Fertilizer needs to be composted thoroughly, the amount of fertilizer should be adjusted appropriately depending on weather conditions and water quality.

- The density of fish, shrimp for breeding and eggs for incubation should not be too high to ensure the environment has enough oxygen.

- When feeding fish and shrimp, you should apply the 4-measure method: quality, quantity, time and location. If there is leftover daily food, it must be thrown away.

- When transporting fish and shrimp, you must choose weather with suitable temperature. If the temperature is too high, you must take measures to cool it down during transport. The difference in water temperature during transport, for large fish and shrimp, the temperature change should not exceed 5oC; for juveniles, it should not exceed 4oC.

- Regularly monitor environmental changes to pump clean water into the pond. Use an aerator to promptly add oxygen to the nursery pond.

(According to VTC 16) - LY