CATDOLL : CATDOLL: Where are swimming crabs produced and how to raise them?

Where are swimming crabs produced and how to raise them?

Swimming crabs are an important economic crab species in China's coastal areas. They grow rapidly and are an important aquaculture species in China's coastal areas. This article introduces where swimming crabs are produced and how to raise them, for reference by interested friends.

1. Where are swimming crabs produced?

The production areas of swimming crabs are mainly distributed in the waters of coastal areas such as Liaoning, Tianjin, Shandong, Jiangsu and Zhejiang. From south to north, March to May and September to October are the peak production seasons, and the output in Bohai Bay and Liaodong Peninsula is relatively high in April and May.

The pH value adaptation range of swimming crabs is 7.5-8, the dissolved oxygen cannot be lower than 2 mg/L, the chemical oxygen demand generally does not exceed 12 mg/L, the hydrogen sulfide does not exceed 0.2 mg/L, and the half-lethal concentration of copper ions within 24 hours is 58 mg/L.

2. Can swimming crabs be artificially cultivated?

Swimming crabs can generally be cultivated artificially. Because the meat of swimming crabs is relatively fat, tastes good and has relatively high nutritional value, they are loved by consumers.

How to raise three-simple stool tung and swimming crab

1. Prepare the pond (1) Swimming crabs are best suited to growing in seawater. You need to prepare salt water with no pollution. When filling the pond, the water depth should not exceed 6 meters.

(2) You can put some small fish and shrimps into the water to provide natural food for swimming crabs.

(3) Swimming crabs like to bask in the sun on the shore. When building a pool, you can leave a portion of land area to satisfy their preference. You can spread a proper amount of sand on the land to satisfy the swimming crabs' habit of throwing sand.

2. Pond disinfection (1) Before the seedlings are put into the water, the water in the pond should be drained and the silt at the bottom should be removed, leaving only a small amount.

(2) You can place some containers such as water bottles at the bottom of the pond to provide swimming crabs with more suitable adjustment space.

(3) After cleaning the pond, you can add an appropriate amount of water and fertilizer. After a few days, you can release the swimming crab seedlings.

3. Release of crab seedlings (1) As crabs like to fight for food, when releasing the seedlings, they should be fed separately according to their size.

(2) The temperature of the pool cannot be lower than 20°C and should not fluctuate too much. The water temperature must be strictly adjusted according to changes in air temperature.

4. Daily Management (1) In addition to adjusting the water temperature in a timely manner, the water in the pond needs to be replaced in a timely manner. In the hot summer, the water needs to be replaced twice a week.

(2) When the weather is hot, the appetite of swimming crabs will decrease. You can feed them some small fish and shrimps that they like to maintain their nutritional needs.

(3) Pay attention to the oxygen content in the water pool. When there is too little oxygen, it may cause large-scale death of swimming crabs.

Want to breed swimming crabs, what conditions are needed to breed swimming crabs?

I want to breed swimming crabs. What conditions are needed to breed swimming crabs?

Swimming crab is another name for white crab. Because its body shell looks very similar to that of a swimming crab, it is called swimming crab. The meat of swimming crab is plump, delicious and has high nutritional value. It is widely distributed in various coastal cities and is a common food for people in coastal areas, but it is difficult for people in inland areas to eat it. Therefore, more and more people are starting to engage in large-scale breeding. How should swimming crabs be bred? Let's take a look below!

1. Prepare the pond in advance

Swimming crabs are marine creatures, so the water quality requirement is that they must be saltwater. You should choose an area with abundant water resources and clean water quality without pathogens. It is best to have sufficient miscellaneous fish and shrimps, because it can provide sufficient natural food for swimming crabs. There is a good irrigation system, which is convenient for changing the water in the fish tank. Swimming crabs like to rest on the shore, so there should be enough open space around the pond for swimming crabs to rest, preferably with a steep slope. Put appropriate fine sand in the pond to meet the swimming crabs' preference for lurking in the sand. The pond water should not be too deep, 4-6 meters is enough.

2. Prepare for work

Before stocking crab seedlings, drain all the water, clean the pond, and sprinkle lime powder all over the pond for disinfection to eliminate the original pathogens and prevent crab seedlings from getting sick. Remove the sludge in the pond, but not too much, just a little. Then loosen the remaining sludge and expose it to the sun for 3-5 days before stocking. Pay attention to setting up oxygen, irrigation and cannon equipment in the pond, and make all preparations. A certain number of empty bottles, water pipes, etc. can also be placed in the regulating pond to let them rest. Before stocking, apply appropriate fertilizers to the pond to cultivate sufficient plankton. Fertilizers should not be too much, otherwise the water quality fertilizer effect will be too large, which will harm the growth of crabs.

3. Crab seedlings stocking

After all preparations are done, start stocking crab seedlings. The crab seedlings stocked in the same pond should be of the same size. Different sizes are prone to large ones bullying small ones, affecting the survival rate. The stocking density should not be too large. The total number of crabs stocked per mu should not exceed 3,000, otherwise there will be competition for food among crabs, fights, etc., affecting the growth and survival of all crabs. But it should not be too sparse. Too little will reduce the charm of crabs and easily affect the water quality. Feed concentrated feed on time, the temperature during stocking should not be lower than 20 degrees, and the temperature should be controlled at a constant speed to effectively improve the survival rate.

4. Daily management methods

In summer, you should pay attention to the changes in water quality in time. You should change the water at least three times a week. The frequency of changing water in the fish tank is determined by the temperature changes. The water change rate must be determined according to the water quality and the growth of the crab. Swimming crabs are very carnivorous. They can be fed with fish, shrimps, shellfish and other small animals. They should be fed at least twice a day. When the temperature drops to ten degrees in winter, they do not need to be fed. Because the lower the temperature, the worse the appetite of swimming crabs. They will not eat at all when the temperature is below ten degrees. During breeding, you should inspect frequently, observe the water quality and growth status, change the water and add oxygen to the fish tank in time, and catch sick crabs immediately for inspection and proper treatment.

The above is a brief introduction to swimming crab farming. The total area for swimming crab farming is not large, because the first requirement of salt water has kept most people away. However, it has attracted many people to go to coastal areas for farming, and the market for swimming crabs is now in a tight situation. Therefore, there is still a certain market prospect for farming. If you have the conditions, you can contract a piece of land on the seaside for farming. The article is for reference only, and I hope it will be helpful to us.

A spacious breeding site is needed, and salt water is needed, because this kind of crab grows in the ocean. The water quality needs to be relatively clear and pollution-free. Not too much water should be added. Disinfection should be done regularly, drainage measures should be taken, and suitable feeding and transportation feed should be selected. The water temperature should be kept at no less than 20 degrees all year round.

You must choose a large environment, preferably about 15 acres, you must choose a place with abundant water resources, the pool must be made deeper, and the base must be free of any pollution, and it is convenient for drainage and water inlet.

1. Prepare a shallow pond without pollution. The water where swimming crabs like to live should not be too deep. 2 Leave some land, as they like to bask in the sun. 3. Adjust the water temperature according to the weather.