How to raise freshwater crabs

When it comes to crabs, everyone must be familiar with it. It is not only of high nutritional value, but also the best gift for people. At present, many parts of our country are raising crabs. How to raise freshwater crabs?

1. Requirements for culture ponds

Crabs like to grow in an environment with plenty of water and clean water, so it is best to breed in a place far away from the city and pollution-free around. In addition, some clay, sand or sub-sand should be put at the bottom of the pond, and the water depth should be between 0.6 and 1.5m.

2. Keep the pool clean

After a period of time, the crabs should be disinfected by sprinkling some bleach powder at the right time. 3-4 days after disinfection, about 150kg organic humus fertilizer can be put into the pond. After a few days, the color of the swimming pool will gradually change to turquoise, and the water should be kept clean and hygienic. It is usually available for inventory 5-6 days after the liquidation pool.

3. Release seedlings

Go to the monopoly market to buy some crab fry, and then put the crab fry into the pool at the right rate. Generally, the two-year breeding model can be adopted, that is, the young crabs are purchased at the end of May and the beginning of June, and then extensively propagated in the pond, and the buckle crabs can be bred at the end of the year. In the spring of the second year, these crabs can be put into the pond farm. Usually, the standard of crab breeding is 100 / kg. The specification and quality of river crab out of the pond can be improved by stocking 300 Mu per mu of water and adopting proper release.

4. Culture management technology

(1) Water quality control: when raising crabs in ponds, very high requirements are put forward for the water quality used. The pond water needs to be disinfected. Through the use of bleach to disinfect the pond, we must ensure the cleanliness of the water quality and avoid water quality problems.

(2) Prevention and treatment of crab disease: crab disease prevention and control should give priority to prevention, early detection, early treatment, no disease prevention and early treatment, and different methods should be taken to prevent crab disease at different growth stages.