How to raise blue crabs?

The quality of soil in mud crab pond beach is not only related to the latent habitat of blue crabs, but also directly affects the firmness of dams. Therefore, it is appropriate to choose homogeneous soil with water retention, no leakage, high adhesion and no collapse.

The species of bait is carnivorous crab, so carnivorous bait should be the main one, supplemented by plant bait. Commonly used baits include red meat blue clam, muscle clam, duck-billed clam, Scapharca subcrenata, short tooth clam, freshwater river clam, freshwater snail, small miscellaneous fish, miscellaneous shrimp, miscellaneous crab and other small low-value shellfish. Some blue crabs can also be fed with artificial mixed bait.

There are many kinds of edible bait, which can be selected according to the actual local resources. As long as the cheap bait is nontoxic and harmless, and the blue crab likes foraging, it can be used as a source of bait to ensure supply, but the bait must be fresh, and the moldy and deteriorated bait must not be fed, otherwise it will seriously affect the healthy growth of the blue crab.

Extended data:

Reasonable water exchange is the most economical and effective method to improve the water quality environment. Change the water daily, once every 3-5 days and more at high tide according to the principle of "small amount and many times".

Try to lower the water level in the pond before overwintering, so as to encourage autumn crabs to dig holes on both sides of the middle ditch and at the bottom of the pond to hibernate. When cold air comes from the north, try to raise the water level to prevent autumn crabs from frostbite and affect the survival rate of wintering.

When the water temperature is lower than 65438 00℃ in the wintering period, there is no need to feed bait. When the water temperature is above 12℃, feed a small amount of bait, and when the water temperature rises above 14℃, feed more bait appropriately. For ponds with small area and poor thermal insulation, sheds can be built to cover the winter.