The stocking of white shrimp

First, the seedling density

The seedling density was comprehensively considered according to shrimp pond water depth, water exchange conditions, aeration facilities, farming methods, seedling size, feed supply, aquaculture production and specifications, equipment and management experience.

The appropriate density of stocking is an important measure to seize high yields. The seedling density depends on the condition of the pond. The general stocking density is 20,000 to 50,000 per mu. Without oxygenation facilities, the number of seedlings shall be considered in terms of water depth and water exchange rate. The water depth shall not exceed 1.2m, and the seedling shall be less than 8,000 tails/mu, the water depth is 1.3 to 1.5m, and the seedling volume is 1.2 to 15,000 tail/mu. Depth 1.5m above the seedlings 15,000 to 20 thousand / acre. The intensively-cultivated shrimp ponds, which are equipped with water lifting and aeration facilities, have a relatively high level of management technology and are capable of high-density farming, with 30,000 to 50,000 flies per acre. Higher economic efficiency. Shrimp disease in the south is more common, and it is generally considered that it is beneficial to appropriately reduce the density of seedlings, make them grow faster, shorten the breeding cycle, and reduce shrimp pond pollution and aging.

Second, pay attention to matters

Before hatching, check whether the food organisms have been cultivated for 1 week, and the transparency is 30-50cm; if the pH value in the pool is stable at 7.8 or more; whether the salinity and water temperature are close to the nursery ponds, if the gap is large, try to adjust them: At the same time, each pond should be filled with shrimp seedlings at one time, and the batches of shrimps in the same pool should be controlled to avoid differences in the size of the cultivation and affect the production effect. After the shrimps are transported to the shrimp ponds, they should be put into the shrimp ponds to be equilibrated with the water temperature, and then put into the pool, which will help improve the survival rate of the shrimps.

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