What kind of crab is green crab? Explain the breeding technology in detail!

Green crab is a kind of green crab, which is more common in the coastal areas of our country. It is generally listed before and after Ching Ming Festival. It is deeply loved by people because of its high nutritional value and various eating methods. What kind of crab is it? What are the breeding techniques?

What kind of crab is green crab?

The main results are as follows: 1. green crab is a sea crab of the family Portunidae, with a flat body, a cyan oval carapace, sharp on both sides, two pairs of protruding triangular teeth on the forehead, nine triangular teeth of different sizes on the side, five pairs of feet on both sides of the body, and the right foot is slightly larger than the left foot, and the front and posterior edges of the knuckles have brush-like short hairs.

2. Green crab is a kind of crab whose body color is turquoise. It is generally common in Guangdong, Guangxi, Fujian, Zhejiang, Taiwan and other coastal areas. At present, it is the most produced in Jiangsu and Zhejiang, and the price is small and expensive, and it is sold in most markets in our country. At present, the price is about 60,80yuan per jin, which may be even higher if it is celebrated during the Spring Festival.

3. Green crab is a kind of seafood, which is divided into male crab and female crab, in which male crab has a lot of meat, especially the navel tip and double claw are very fat and well-organized, so they are often used in many dishes. The female crab has a lot of roe, and it is more famous among crabs.

4. Green crab is a kind of sea crab with high nutritional value, which is rich in protein, calcium, copper and other elements, which can regulate heart rhythm, lower blood pressure, eliminate edema, reduce swelling, improve anemia, improve immunity and so on.

Second, what are the breeding techniques of green crab?

1. Site selection and construction: where is suitable for breeding?

Green crabs are suitable for growing in a clear and pollution-free environment, so when selecting land, try to breed them in the surrounding areas where there is no industrial and agricultural production, no pesticides and no domestic sewage. After selecting the site, build a cement pool that is 50 meters long, 30 meters wide and 1.5 meters high, then put some broken tiles in it, make some caves, put in 50cm-high water and surround it with a protective net.

2. Put in crab fry: how much is it to put in one mu of land?

Choose some full-bodied, active and hard-shelled crab fry into the pool, and then put around the protective net. Generally, it is best to put 1000,200 crab fry per mu, not too many, lest they kill each other when they grow up later.

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

(1) Feed feeding: every morning or evening, feed an appropriate amount of small fish, shrimp, fish meal, soybean meal, etc., and feed 30% of the body weight. Each time, feed less in the morning and more in the evening, and during the feeding period, always observe the water temperature and the active state of crabs, and take timely measures if you find discomfort.

(2) Water quality requirements: Scylla sinensis is suitable for clear water quality, and the dissolved oxygen content is 3mg. The dissolved oxygen content is in the environment of 7.8pm 8.5, so change the water every 3 to 5 days, and every time change the water of the whole pool. If the oxygen content is not enough, put a low-power aerator. If the salinity of the water is too high or too low, you should change the water in time to provide a good growth environment.

(3) Prevention and control of diseases and insect pests: during the growth of green crabs, diseases and insect pests such as ciliosis, molting failure, yellow spot, yellow water disease, rodent and snake pests will occur, so it is necessary to take good prevention and control measures.

The above is a detailed introduction of what green crab is and its culture technology. I hope it will be helpful to everyone.