Prevention and control methods of crab polycondensed disease

Symptoms of crab polyplasmosis

Because the pond water is too fat and the water quality is poor, Polycondensation worms multiply and parasitize on crab bodies, and there are more dirt in the shell of diseased crabs, vitality and appetite are gradually weakening, and most of the serious ones die before dawn. Careful microscopic examination can be found that the forehead, foot, shells and gills of diseased crabs are covered with condensed worms.

Prevention and control of polycondensed disease of crab

Wash the diseased crab with the mixture of potassium permanganate of 5~10mg/kg and bromogeramine of 0.5~1mg/kg, and sprinkle the malachite green solution of 0.2~0.3mg/kg on the edge of the pond, aquatic plants and other dense places of river crabs.