What are the symptoms and treatment methods of crab edema disease

In recent years, crabs have become highly popular, and their nutritional value is extremely rich, with very high protein content, and their economic benefits and farming prospects are quite good. More and more farmers are starting to farm crabs, but diseases inevitably occur when farming crabs, and edema disease is one of them.

1. Cause of the disease

The abdomen, abdominal flap and lower part of the back shell of the diseased crab swell and appear transparent. The diseased crab stops eating at the pond edge and dies in the shallow water at the pond edge. This disease is caused by infection of the abdomen from injuries sustained during the river crab farming process.

2. Symptoms of the disease

The abdomen, abdominal muscles and lower part of the back shell of the diseased crab swell and appear transparent. The diseased crab crouches at the pond edge, stops feeding, and finally dies in the shallow water at the pond edge.

3. Prevention and treatment methods

1. During molting, minimize disturbance to the river crabs and prevent them from being injured.

2. For every cubic meter of water, use 0.5 g to 1 g of oxytetracycline mixed with water and splash it over the entire pond.

3. For every kilogram of river crab, mix 0.1 g to 0.2 g of oxytetracycline or erythromycin into the bait and feed continuously for 7 days.

Note: Crabs are rich in protein and trace elements and have a very good nourishing effect on the body. Crabs contain relatively large amounts of vitamin A, which helps with skin keratinization. Crabs also have an anti-tuberculosis effect, and eating crabs is greatly beneficial for the recovery from tuberculosis.