What should I pay attention to when raising flying crabs in the pond?

First of all, before the formal breeding, we must choose a very good pond environment for pike crabs, generally the area and water environment of the pond need to be relatively deep, and it is best to choose a land-based pond, the area of the pond is not too big, not too small, but the water depth must be kept above the meter.

If the overall area of our pond has exceeded ten acres, we must use a plastic net to insert at the bottom of the pond and separate the whole pond to avoid excessive concentration and too much density of pike crabs due to changes in ambient temperature or water quality. If the pike crabs gather together for a long time, it is easy to kill each other directly, so for the sake of our economic benefits, we must make such preparations.

Secondly, at the bottom of the pond, we also need to prepare a variety of drainage equipment, or sluice gates, etc., which can facilitate our drainage and water intake. The sand used at the bottom of the pond is best to use a sandy mud texture, which can easily form a slope groove shape at the bottom of the pond, which is not only conducive to the habitat of the crabs, but also allows them to have a good place to hide. In addition, we can also put some woven bags at the bottom of the pond, which can hold some shells, the main function of these bags is also to allow the pike crabs to find a good place for themselves to rest, and at the same time to achieve a balanced and stable state for their growth environment.

Adult crab breeding ponds should have the following conditions: convenient transportation, quiet environment, leeward and sunny; The water source is abundant, the water quality is good, and the drainage and irrigation are convenient; The area is generally 10 20 acres, the area is too small, the water quality is not easy to stabilize, and the management is inconvenient if it is too large; The depth of the pool is 1 meter, and the depth of the water is 1 meter; The slope of the pond is 1 3, which can greatly reduce the number of river crab burrows; The pond is a rectangle long from east to west and narrow from north to south, with a length-to-width ratio of 5 3;The ridge of the pond is wide, the soil is compact, and loam soil is preferred; The pond does not leak, and the silt at the bottom of the pond does not exceed 5 cm.

River crab breeding technology (1) Crab cultivation In order to improve the survival of juvenile crabs and increase economic benefits, it is necessary to breed crabs first. In order to reach the big-eyed larvae of the year to commercial crabs, most of them are currently using plastic greenhouse temporary breeding technology. Choose good water quality and sufficient water sources; Note, convenient drainage, no leakage, no seepage, less silt pond, the area should not be too large, the water depth is not more than meters, the pond shape is good from east to west, the sun is sufficient, and the construction of greenhouses can refer to the construction method of agricultural vegetable greenhouses.

15-20 days before the crab seedlings, 75 kg of quicklime per mu is sprinkled with disinfection, and after the medicinal properties disappear, the water is fed with an 80-mesh filter screen, the basic bait is cultivated, the aquatic plants are transplanted (must be strictly disinfected), and the necessary anti-escape facilities are set up. Crab seedlings can be shallow when entering the pool. It is beneficial to improve the water temperature and the growth of algae and aquatic plants in the water.

Feed bait 2-3 times a day, feed soybean milk, fish, shrimp surimi, etc., feed should be more in the surrounding shallow areas, feed according to 4% of body weight calculation, and pay attention to the weather, water sanctions, individual growth at any time.

Precautions for pond crab farming:

Good pond conditions, the area is 5 10 acres, the water depth is meters, the ditch is 2 meters deep, the water source is sufficient, the water quality is excellent, there is no worry about drought and flood pollution, and the inlet and drainage outlets are independent of each other.

Good ecological environment, such as planting aquatic weeds and fertilizing water.

Fish, crab and shrimp are used in a highly efficient polyculture mode.

Adhere to large-scale and low-density delivery.

Do a good job of water quality control.

Do a good job of feed feeding.

Summary. 3. Anti-escape construction. There are two escape peaks in the process of river crab breeding, one is from bigeye larvae to I stage juveniles, and the other is the sexual maturity stage of river crabs.

This is due to the feeding and reproductive migration habits of river crabs. In other periods, as long as the water environment is good, with a certain habitat environment and bait, the escape of river crabs is small. River crabs also have an escape method similar to "building a human wall" during the peak escape period, and will climb together in several stacks when encountering obstacles.

When preventing river crabs from escaping, the habits of river crabs should be combined. The anti-escape facility should have a smooth surface, so that the river crab cannot cling to climbing, sturdy and durable, withstand wind, sun and rain, not easy to age, damage, no soluble toxicity, and low cost. When the anti-escape wall is built, the foundation should be solid, not collapsing or leaking, and the bottom should be buried 30-40 cm in the ground to prevent collapse and rats from penetrating the wall and making holes.

Cement pools. A farm chooses to build a pond site to fill the water source, close to the river or channel, and the water quality is pollution-free, including industrial pollution such as heavy metals, oil phenols; Agricultural pollution such as fertilizers, pesticides. The soil is best clay and avoid digging ponds in swampy areas.

At the same time, choose a place with convenient transportation and a more secluded fork.

Second, the construction of crab ponds requires that the area of crab ponds should be 4 hectares, which is too large and difficult to manage, and the larvae are easy to attack each other, and the infrastructure costs such as too small to prevent escape are high. It is required that the depth of the pool is about meters, and the water retention depth is 0m, pond east-west, rectangular, slope ratio 1:

3-4 The edge of the pool is more than 1 meter away from the escape prevention facility, the stepped pool slope is adopted, each step is 20-30 cm wide, each step is built with arched tiles to build a crab nest, and an artificial crab hole should also be built in the pool, and the long soil island that accounts for about 10% of the water surface of the pool is left in the pool when digging the pool, and the low orange of the soil island is 20 cm above the water surface. The design of the soil island in the pond can be used as a shelter place for river crabs to dig holes and shed their shells, which is safer than the river hungry crabs molting in the shallow water at the edge of the pool, and can avoid or less harm from water rats and water snakes. The design of the inlet and outlet of the crab pond requires a letter pipe gate, and a plate gate and barbed wire mesh are used as the water filtration and water stopping structure to strictly prevent loopholes.

3. Anti-escape construction. There are two escape peaks in the process of river crab breeding, one is from bigeye larvae to I stage juveniles, and the other is the sexual maturity stage of river crabs. This is due to the feeding and reproductive migration habits of river crabs.

In other periods, as long as the water environment is good, with a certain habitat environment and bait, the escape of river crabs is small. During the peak period of escape, river crabs also have an escape method that is like a "human wall", and when they encounter obstacles, they will stack several stacks and climb together. When preventing river crabs from escaping, the habits of river crabs should be combined.

The anti-escape facility should have a smooth surface, so that the river crab cannot cling to climbing, sturdy and durable, withstand wind, sun and rain, not easy to age, damage, no soluble toxicity, and low cost. When the anti-escape wall is built, the foundation should be solid, not collapsing, seepage stool leakage, and the bottom should be buried in the ground 30-40 cm to prevent collapse and rats from penetrating the wall and making holes.

1.The selection of the site of the breeding farm requires the selection of a place with abundant water source next to the water fowl, fresh water and fresh quality, quiet environment, leeward and sunny, hard substrate (yellow soil is better), and electricity access to build a crab breeding pond. The water source is quoted according to the water quality of rivers, reservoirs, and lakes.

The wastewater from factories and mines contains various harmful chemicals and heavy metal ions, and should not be cited. Spring water with a water temperature that is too cold and water from the bottom of a reservoir should not be quoted. The crab pond should have a certain slope, shallow and land shelter on the edge of the pond.

2.Requirements for building crab ponds Generally, crab ponds are required to be built 15 days before stocking crab seeds. There are many forms of crab ponds, there are deep water areas dug around the embankment, shallow water areas in the middle, and there are also many small ditches dug in large ponds.

What is introduced here is a concave crab pond, that is, a deep water area dug in the middle, a shallow water area around it, and a kind of crab pond with an embankment on the side, each pond is 5,000 square meters or larger, and the soil in the excavated pond can be used to build ridges around. It is required that the width of the top of the ridge is more than 1 meter, the slope ratio is more than 1 2, the area of the deep water area in the middle accounts for about 2 3, the depth of the pool is meters, and the water depth can be maintained at 30 40 cm. It is necessary to set up a high irrigation and low drainage system, and purchase cheap and suitable materials to build to prevent escape.

The process technology of breeding flying crabs is as follows:

The pond area selected for breeding is generally 10 to 20 acres of small and medium-sized ponds, and it is necessary to choose ponds near the sea area with sufficient water sources, no pollution, rich resources of small trash fish, shrimp and shellfish, and convenient inlet and drainage. The depth of the pool should be more than 5 meters. The bottom of the pool is better with sediment, and the bottom of the pool should be covered with sand about 15 cm.

Remove too much silt at the bottom of the pond, loosen and expose the bottom of the pond, and repair the pond embankment, sluice gates, canals and other supporting facilities. After the pond is renovated, it is necessary to put cement pipes, tiles, bamboo tubes and other obstacles at the bottom of the pond. Breeding in July, to change the water every 2 to 3 days, 8 to 9 months, to change the water every 1 to 2 days, in October, to change the water every 4 to 5 days, the specific water exchange and water interval should be on the weather, water temperature and other environmental factors and specific changes.

During the patrol period, the feeding and activities of the pike crabs should be carefully observed, the changes in the pond water should be paid attention to, the residue bait in the pond should be checked, and the feeding amount and water exchange should be adjusted in time.

Stable temperature: Hermit crabs prefer to live in a warm environment, and the temperature needs to be controlled between 25-32 when they are farmed in captivity. When the temperature is low, they are at risk of dying.

Regular ventilation: Although hermit crabs prefer a humid environment, they also need to be ventilated regularly when farming.

Prepare shells: Hermit crabs will change their shells regularly, and you need to prepare some shells of different sizes for them when they are bred in captivity.

Hermit crabs are omnivorous fish and can eat a wide variety of foods. They are also known as seaside scavengers because they can eat plants such as algae, aquatic plants, as well as parasites and small creatures. Artificially farmed hermit crabs can be fed with some small fish, minced meat of small shrimp, and can also be fed with some vegetables, fruits and other foods, as long as they are not acidic and dairy products, they can almost eat.

For breeding hermit crabs, it is best to feed them once a day, and the amount of each feeding should not be too large. When they are finished, they need to clean the surrounding food debris.

Summary. Hello dear, the hairy crab temporary pond has a lot of benefits, such as: 1) The hairy crab that has just come out of the lake is still contaminated with sediment, and it can be raised in a special temporary pond for a few days, which can allow the hairy crab to spit out the sediment, and it is also conducive to the stability of the meat quality of the hairy crab.

2) Keep the hairy crabs fresh for temporary breeding, but also avoid the loss of water of the hairy crabs, always keep them fresh, and ensure that the hairy crabs are still alive when they are delivered to the consumer's fingers. 3) The selection of hairy crabs after spitting sand can minimize the error of catty crabs, so that consumers can buy hairy crabs that are full of catties.

Hello dear, the hairy crab temporary breeding pond has a lot of benefits, such as: 1) The hairy crab that has just come out of the lake with sand and mud is still contaminated with sediment, and the hairy crab can be raised in a special temporary pond for a few days, so that the hairy crab can spit out the sediment, and it is also conducive to the stability of the meat quality of the hairy crab ear feast. 2) Keep the hairy crabs fresh for temporary breeding, but also to avoid the loss of the balance of the water flow of the hairy crabs, always maintain a fresh state, and ensure that the hairy crabs are still alive when they are delivered to the consumer's fingers.

3) The selection of hairy crabs after spitting sand can minimize the error of catty crabs, so that consumers can buy hairy crabs that are full of catties.

The temperature of the temporary water is how many degrees will not die.

The water temperature for breeding hairy crabs is 20-25 degrees Celsius.

Do you need to change the water every day in the respite pool?

It doesn't need to be changed every day.

3 Change every 5 days.

Can. Do I need to feed every day?

It is best to do it every other day.

The digestive system of hairy crabs is not so fast, and there is no need to feed them every day.

What ingredients to feed will not lose weight.

It's convenient to ask, where are you like, and I'll help you find a more suitable breeding method.

Feed the small dried fish. Sold in Laiba.

What do you usually feed.

Oh, in the vegetable market, it is more humid, just pay attention to hydration and oxygen.

Crabs are rich in protein, trace elements and other nutrients, which have a good nourishing effect on the body. Some crabs can also be viewed as pets, thenHow to raise ornamental crabs?

1. Preparation for feeding

For the first time, they need to soak in salt water for 1-2 minutes to remove parasites or lice, new crabs usually burrow into the sand for a few days to a few weeks to adapt to the new environment, at this time to reduce disturbance to it, to put it in some dark and quiet places, to maintain a daily change of food and appropriate temperature and humidity.

2. Environmental selection

Try to find a location close to the window, or a place where the sun can reach obliquely, and avoid exposure to the sun. Place the cylinder lower, with the highest edge of the cylinder at the lowest edge of the window. Arrange a little more concealment, especially the hut, to match their habits.

3. a feeding tank

The fish tank should be larger, and some stone bridges, fine sand and aquatic plants should be placed at the bottom of the tank, and the tap water should be injected into the exposed tap water, and the water should not be over the shell of the crab.

4. Daily management

Feed 1-2 times a day, and the amount of food should be eaten within half an hour. The crabs should be cleaned regularly, and the fish tank should also be washed. Change the water every three days, and sprinkle quicklime for sterilization and disinfection after the water change.

In addition, because the breeding environment of ornamental crabs may not be ideal before they are bought back with a consumption base, it is easy to breed bacteria in the body, so it is best to disinfect them before breeding.