What Kind of Crab Is the Mud Crab? A Detailed Guide to Mud Crab Farming Techniques

The mud crab is a crab whose body color is greenish-blue. It is fairly common in China's coastal areas and generally comes to market around Qingming Festival. Because of its high nutritional value and varied ways of eating, it is deeply loved by people. So what kind of crab is the mud crab? What are its farming techniques?

1. What kind of crab is the mud crab?

1. The mud crab is a marine crab of the genus Scylla in the family Portunidae, order Decapoda. Its body is flat, and its carapace is greenish-blue and oval, rather pointed on both sides. The forehead has two pairs of protruding triangular teeth, and the lateral margins have 9 triangular teeth of unequal size. On each side of the body there are 5 pairs of legs, and the right leg is slightly larger than the left. The front and rear margins of the finger joints have brush-like short hairs.

2. The mud crab is a crab whose body color is greenish-blue. It is fairly common in coastal areas such as Guangdong, Guangxi, Fujian, Zhejiang and Taiwan, China. At present, the most are produced in the Jiangsu-Zhejiang area, and the price is somewhat high. It is sold in most markets in China. The current price is about 60 to 80 yuan per jin, and during Chinese New Year and festivals it may be even higher.

3. The mud crab is a kind of seafood, divided into male and female crabs. Among them, male crabs have more meat, especially the pointed abdomen and the two chelae, which are very plump and clearly layered, so they are mostly used in many dishes. Female crabs have more crab roe and are relatively famous among crabs.

4. The mud crab is a marine crab with high nutritional value. Its body is rich in protein, calcium, copper and other elements. It has the effects of regulating heart rhythm, lowering blood pressure and eliminating edema. Regular consumption can reduce swelling, improve anemia and boost immunity.

2. What are the mud crab farming techniques?

1. Site selection and construction: what kind of land is suitable for farming?

Mud crabs are suitable for growing in an environment with clear, pollution-free water. Therefore, when choosing a site, try to choose a place with no industrial or agricultural production, no pesticides and no domestic sewage nearby. After choosing the site, build a cement pond 50 m long, 30 m wide and 1.5 m high, then put some broken tiles inside, create some artificial caves, add water 50 cm high, and surround it with protective netting.

2. Stocking crab seedlings: how many is best to stock per mu?

Select some crab seedlings with intact bodies, that are active and lively and have hard shells, put them into the pond, and then surround it with protective netting. Generally, it is best to stock 1000 to 200 crab seedlings per mu. Do not stock too many, to avoid them killing each other when they grow larger later.

3. Farming management techniques: what are the requirements for food?

(1) Feed feeding: every morning or evening, feed an appropriate amount of small fish, small shrimp, fish meal, soybean meal, etc., and the feeding amount can be 30% of body weight. Each time you feed, feed a little less in the morning and a little more in the evening. During feeding, always observe the water temperature, the crabs' activity state, etc., and if any discomfort is found, take countermeasures in time.

(2) Water quality requirements: mud crabs are suitable for growing in an environment with clear water, dissolved oxygen at 3 mg/l, and pH at 7.8 to 8.5. Therefore, change the water once every 3 to 5 days, and each time change 1/5 to 1/3 of the whole pond. If the oxygen content is insufficient, install a small-power aerator. If the water salinity is too high or too low, change the water in time to provide them with a good growing environment.

(3) Pest and disease control: during the growth period of mud crabs, diseases and pests such as ciliatosis, incomplete molting disease, yellow spot disease, yellow water disease, rat damage and snake damage may occur. Therefore, prevention and control measures should be taken well. For those that have already developed pests or diseases, apply the right treatment in time.

The above is a detailed introduction to what the mud crab is and its farming techniques. We hope it is helpful to everyone.