What is the breeding method of hairy crabs?

Hairy crab generally refers to Eriocheir sinensis, which is a traditional aquatic treasure in China. There is extensive aquaculture in our country, so what is its breeding method?

What is the breeding method of hairy crabs?

Here is a brief introduction to the methods of pond and rice field culture.

Rice field culture

1. Choose a place with sufficient water source, good water quality, no pollution and convenient injection and drainage. Avoid acidic soil, the area should be 10-15 mu.

two。 Crab culture in paddy field must have a perfect inlet and drainage system and independent inlet and outlet, which is easy to control the water level. At the same time, we should do a good job of protection to avoid the escape of river crabs and the entry of enemy creatures.

3. The crab was injected with water 7-10 days before stocking, and began to fertilize to cultivate water quality. The fermented and mature organic fertilizer 250kg was applied per mu. Crab species specifications should be as large as possible, usually 50-100 / kg, stocking quantity per mu is 600,800.

4. At the beginning of crab breeding, the water level in the paddy field should be kept at 5-8cm, and then the water should be added gradually, and the water should be changed properly in the midsummer season.

5. It is mainly based on rice field water grass, with an appropriate amount of fresh animals (such as pests), animal feed (such as snails, clams, etc.), plant feed and other alternative feed, adhering to the principle of "combination of meat and vegetables, combination of essence and green". Feed twice a day, once in the morning and once in the evening, and the actual daily feed intake depends on food intake and weather conditions.

6. Adhere to the principle of giving priority to prevention and combining prevention with prevention. It is also necessary to inspect regularly to ensure the normal growth of hairy crabs.

2. Pond culture

1. The suitable cultivation pond is 3-5 mu, with a depth of 1.5m and a water depth of 0.8. 1m, require less silt at the bottom of the pool and tilt to the direction of the nozzle, so that it is convenient for fishing in autumn, the water intake should be above the pool surface, the outlet should be blocked, and there should be anti-escape equipment around the pool.

two。 Desilting and disinfection should be done in the pond before stocking, and aquatic plants such as Ellosia, Sophora flavescens and water peanuts should be transplanted in the pond. Stocking crab fry 0.5-lkg or young crab 20-30 thousand per mu.

3. In the breeding stage of young crabs, the feed was mainly fed with animal feed in the early and later stages, and wheat bran, wheat flakes and aquatic plants were mainly fed in the middle stage, and the feeding amount increased or decreased according to feed type, water quality, weather condition, water temperature and feeding intensity of young crabs.

Although the ways of breeding hairy crabs are different, the density and feed feeding are also different, but the daily inspection and diseases and insect pests are the same attention.