Diseases occur frequently in the rainy season, what measures do crayfish farmers take to deal with them?

Recently, affected by typhoons, it has been raining everywhere and sunshine is insufficient. It is a big problem for crayfish farmers in plum rain season. Because it rains frequently, surface dirt and soil flow into the culture pond with rainwater, algae growth is not vigorous, the purification ability of water body decreases, microorganisms decompose anaerobically, and harmful substances are produced, which causes chronic or acute poisoning of cultured crayfish, and it is most likely to cause death of crayfish that is molting and has just finished molting. Constant time insufficient light, will cause crayfish absorption calcium ability decline and autoimmunity decline, cause crayfish disease, even death, in view of the above situation, crayfish farmers have what measures to deal with it?

Disease in Meiyu Season, Countermeasures for Crayfish Culture

1. Under normal circumstances, quicklime is used once every half month to once every 10 days. Depending on the water quality, it is used 10ppm-20 ppm.

2. After using disinfectant for 3 days, use photosynthetic bacteria freeze-dried powder 500g/mu for about 15 days. Rice, mixed with clean water, activated at noon on a sunny day, spilled in the whole pool.

3. After several days of continuous rain, you can use 300 g/mu. Rice, VC 200g/mu. Rice mixed with water spilled all over the pool.

4. If the aquatic plants cover more than 1/3 of the pond, the excess parts should be manually cut off to increase the illumination area of the pond and enhance the physique of the crayfish.

5. Feed high quality feed, and add 2.5% immune polysaccharide in feed.

Note: crayfish grow fast, after 3 months to 5 months of breeding, adult shrimp specifications reach more than 30 grams can be caught on the market. There are many fishing methods, such as shrimp cage, net casting, net pulling or dry pond catching. The method of catching large fish and keeping small fish is adopted, and those that do not reach the market specifications continue to be kept in ponds. It should be noted that drugs should be used with caution before catching diseases and cures, otherwise the recapture rate of crayfish, the quality of commercial shrimp and the breeding benefit will be affected.