Shrimp and Crab Pool Clearing Wild Fish with Tea Saponin

Freshwater aquaculture crabs, green shrimp, Macrobrachium rosenbergii, Penaeus vannamei pools often exist in the wild fish, squid, loach and other wild fish. These wild fish compete with shrimps and crabs for feed, reducing feed utilization and affecting the growth of shrimps and crabs. In the past, sodium tetrachlorophenol was commonly used to remove wild fish in shrimp and crab ponds. However, sodium pentachlorophenol was highly toxic and seriously polluted the environment. The country has banned the use of it. Tea saponin is a natural active substance that can not only clear the wild fish in shrimp and crab pool, but also be safe for shrimps and crabs. It can replace sodium pentachlorophenol as a clear pond agent for killing wild fish in shrimp and crab pools.
The author used tea saponin to clear the wild fish in shrimp and crab ponds, and tested the toxic effects of shrimp, crab and wild fish. When the water temperature is 28°C, the concentration of the tea saponin to be sprayed on the wild fish can be reduced to 2.5 mg/l in the case of head and fish, and 4.5 mg/l in the case of mud louse. Tea saponin is safe for shrimps and crabs. Even shrimps and crabs with a concentration of 18 mg/l can survive normally. In the pond where shrimp and crab are raised, 3 grams of tea saponin and 3 grams of tea saponin are added to the pool for every cubic meter of water. After 16 hours, the wild fish in the pool can be removed. The shrimp and crab are basically not affected.

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