Do you know what the key points are about the artificial breeding method of pike crabs?

The three-wart crab is referred to as the pike crab, which is a famous large-scale seafood edible crab. It has strong adaptability to environmental changes and fast growth rate, and is a suitable variety for current breeding.

First, the selection of breeding ponds

It is better to take the earthen pond, and the pond structure is similar to the semi-intensive shrimp pond, and the existing shrimp pond can also be used to transform the crab culture. The area is suitable for small and medium-sized, and the water depth is meters. In order to maintain good water quality, the pond should be able to change the water sufficiently.

Barracuda crabs prefer to roost along the edge of the pond and should increase the slope area as much as possible to avoid excessive density. It has the habit of latent sand, and the bottom of the pond is laid with 10 cm thick medium coarse sand and made a small sand pile to let it roost in. In order to reduce cannibalism, a hiding place for pike crabs should also be built at the bottom of the pond with stones and tiles.

Second, the preparation before the seedling

Before stocking, the pond water should be drained, the bottom of the pond should be exposed, and the aquatic animals that swallow crab seedlings should be removed, and the pond can also be cleared with quicklime, the water depth is below 10 cm, and 75 kg of quicklime milk per mu is used to turn into lime milk and splash the whole pool. 7-10 days after the pond is cleaned, water can be filled into the pool, and the water inlet is filtered by a 60-mesh conical net to strictly prevent predators from entering.

3. Seed stocking

1) Stocking time: In order to raise commercial crabs (about 250 grams) in the same year, the word "early" should be grasped and the first batch of pike crab seedlings should be used as much as possible. However, it should be noted that the same breeding pond must be stocked with seedlings of the same size, so as to reduce the chance of cannibalism in uneven size and improve the survival rate.

2) stocking density: the bottom of the pond is clean, the pond with good water change conditions, the initial seedling density is 2000-3000 acres, and the growth and survival rate are better. Too much or too low a density can affect growth or survival.

After the Mid-Autumn Festival, if the adult crabs that no longer shed their shells in a small area of storage, they will be marketed in winter after short-term fattening, and the stocking density will be about 10 kg per square meter.

Fourth, feeding management

1. Bait: Barracuda crabs are mainly animal bait, and large-scale breeding is better to feed low-value shellfish, followed by fresh trash fish. The daily intake of juvenile crabs weighing grams is 80% of body weight, 20% of body weight is for individuals weighing 30 grams, and about 10% of body weight is for individuals weighing more than 50 grams.

Those weighing less than 20 grams will be actively baited day and night, and those with more than 20 grams will only be baited at night. Therefore, 20-30 days after the start of breeding, feed 2-4 times a day, and then feed once a day in the evening, and bait can be cast along the pond wall.

2. Water quality management: the survival rate of the crystal clear pool is low, and the water should be properly fertilized in the breeding process to make the pool water transparent at about 30 cm. Also, insist on changing the water every day.

Crabs consume a lot of oxygen during molting, and if the water is not changed in time, it will die due to lack of oxygen. In the breeding process, the water temperature is required to be 17-30, more than 30 is at risk of death, and less than 15 will affect the crab feeding, or even stop feeding. The salinity requirement is above 20, and below 20 there is a danger of death.

3. Male and female polyculture: The cultivation rate of male and female polyculture is extremely poor, and the female crab ** in winter is more than 2 times higher than that of male crabs. Therefore, the conditions can be gradually raised separately in the breeding process of females and males, male crabs can be listed at any time after reaching the commercial specifications, and the ovaries of female crabs can be matured regardless of whether they are mated or not, and they can be raised until the ovaries are mature in winter.

1. The choice of breeding ponds: the earthen pond is preferred, the pond structure is similar to the semi-intensive shrimp earthen pond, and the existing shrimp pond can also be transformed to engage in pike crab breeding.

2. Preparation before stocking: before stocking, the pond water should be drained, the bottom of the pond should be exposed, and the aquatic animals that swallow crab seedlings should be removed, and the pond can also be cleared with quicklime, with a water depth of less than 10 cm, and 75 kg of quicklime per mu should be used to turn into lime milk and splash the whole pool. 7 to 10 days after the pond is cleaned, water can be filled into the pool, and the water inlet is filtered by a 60-mesh conical mesh to strictly prevent predators from entering.

4. Feeding management: Barracuda crabs are mainly animal bait, and large-scale breeding is better to feed low-value shellfish, followed by fresh trash fish.

I don't know, because I've never farmed this crab, so I don't know.

<>1. Barracuda crabs can be farmed. 2. Prepare saltwater and non-polluted water quality, the pond irrigation depth should not exceed 6 meters, and some small fish and shrimp should be put in. 3. Reserve a part of the land area and spread an appropriate amount of sand so that the pike crabs can bask in the sun and throw sand.

4. Drain the water in the pond, clean up the silt at the bottom, and place some containers such as water bottles at the bottom of the water. 5. Put seedlings of different sizes separately, and the pond water temperature should not be lower than 20.

1. Can pike crabs be farmed?

1. Whether pike crabs can be farmed.

Barracuda crabs can be farmed, but they are more difficult to breed.

2. Morphological characteristics of pike crabs.

1) Barracuda crabs are called "white crabs" in some places, and they are also known as three-wart pike crabs, gun crabs, sea crabs, sea crabs, etc., which belong to arthropods.

2) The male in the pike crab has a pointed and smooth umbilicus, the chela is long, the shell surface is blue, and the female umbilicus is round and hairy, and the shell surface is ochre or spotted.

3) Barracuda crab has high nutritional and economic value, suitable for marine aquaculture, and its body color will change with the surrounding environment.

4) Barracuda crabs are distributed in Japan, Korea, the Malay Archipelago, the Red Sea and most of the coastal areas of Chinese mainland.

2. Breeding methods and conditions of pike crabs

1. Prepare the pond.

1) Barracuda crab is suitable for growing in seawater, salt water should be prepared, and there is no pollution of water quality, and the water depth should not exceed 6 meters when irrigating.

2) You can put some small fish and shrimp in the water to provide natural food for the pike crab.

3) The pike crab likes to bask in the sun on the shore, and when building a pool, you can leave a part of the land area to meet its preferences. An appropriate amount of sand can be spread on the land to meet the habit of barracuda crabs like to throw 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 part.

2) You can put some containers such as water bottles at the bottom of the pond to provide a more suitable adjustment space for the pike crab.

3) After cleaning the pond, an appropriate amount of water can be injected. At the same time, an appropriate amount of fertilizer is applied, and the pike crab seedlings can be put in a few days.

3. Put crab seedlings.

1) Due to the competitive nature of crabs, when stocking seedlings, crab seedlings should be fed separately according to their size.

2) The temperature of the pool should not be lower than 20, and there should not be much change up and down, and the water temperature should be strictly adjusted according to the change of air temperature.

4. Daily management.

1) In addition to adjusting the water temperature in time, it is also necessary to change the water in the pond in time. In the summer, when the climate is hot, you need to change the water twice a week.

2) When the climate is hot, the appetite of the pike crab will decrease, and you can feed some small fish and shrimp and other foods that the pike crab likes to maintain their nutritional needs.

3) Pay attention to the oxygen content of the pool, when there is less oxygen, it may cause a large area of pike crabs to die.

1. Crab claws are different: wild crabs have longer claws and legs, while farmed crabs have shorter claws and legs. 2. The belly is different:

The belly of wild crabs is slightly shiny, and there is often a black substance in the gaps in the belly of farmed crabs. 3. The shell is different: the shell of wild crabs is harder and smoother, and the shells of farmed crabs are thicker.

4. Different taste: the meat of wild crabs is delicate and fragrant, while the taste of farmed crabs is relatively poor.

1. The difference between wild pike crabs and farmed pike crabs1. Crab claws are different.

1) Wild crabs: crab claws and crab legs are generally relatively long.

2) Cultured crabs: crab claws and crab legs are generally short, but the legs are powerful.

2. The belly is different:

1) Wild crab: The belly is slightly shiny, and there is less silt in the body.

2) Farmed crabs: There is usually a black substance in the gaps in the belly.

3. The shell is different.

1) Wild crab: The shell is relatively smooth and hard.

2) Farmed crabs: the amount of activity is larger, which makes the shell thicker.

4. The taste is different.

1) Wild crab: fragrant in taste and tender in meat.

2) Farmed crabs: The taste is sweeter, but the taste is still slightly worse than that of wild crabs.

2. What is the main feeding of farmed pike crabs1. Fresh bait.

1) Including shellfish, fresh trash fish, small shrimp, young shoots of algae, etc.

2) Barracuda crabs are omnivorous in their juvenile growth stage, and the larger the individual, the stronger the carnivorous they are.

3) Barracuda crabs eat a small amount during the day and eat a lot in the evening and at night.

2. Compound feed.

1) 10% soybean meal, 5% shrimp shell meal, 25% shiitake mushroom, 35% fish meal, 8% corn distiller's grains, 8% brewer's yeast, 5% shrimp cricket protein syrup, phospholipid oil vinnoth aquatic products multi-vitamin vinopide clear multi-mineral vino compound probiotic salt.

2) 60% fish meal, 3% fish oil, 1% astaxanthin, 6% attractant, 5% shrimp shell powder, 3% haematococcus powder, 1% tapioca modified starch, Vino Aquatic Multi-Vino Mold Clearing, Multi-mineral Vino Compound Probiotic Carrageenan Xanthan Gum Adhesive.

The pike crab itself grows in the ocean, and when breeding, it is necessary to ensure that the water quality in the pond is salin, clean and pollution-free.

The water level should not exceed 3 meters, and then small fish and shrimp are placed in the pond to provide bait for the pike crabs.

The first of the pike crab crab seedlings mainly has two kinds of fishing natural sea area and artificial cultivation, and the specifications of the seedlings are generally selected 80 kq is better.

Crab seedlings are required to be neat in size, robust in physique, complete in appendages, strong in vitality, and less than 10% in soft shell rate, and stocked from late May to mid-June.

When breeding pike crabs, you should insist on eating more and a small amount, check and look at it frequently, and pay attention to the freshness and palatability of the bait.

1. Barracuda crab is a marine animal, so the requirement of water quality is to need salt water, and it is necessary to choose a place with sufficient water source and clean water quality without germs. It is best to have a relatively abundant trash fish and shrimp, because it can provide enough natural food for the pike crab, and there is a good drainage and irrigation system, which is convenient for water change. Barracuda crabs like to go ashore to rest, so there should be plenty of open space around the pond for them to rest, preferably on a slope.

Put an appropriate amount of fine sand at the bottom of the pond to satisfy the crab's hobby of diving sand. The pond water should not be too deep, and it can be about 4-6 meters long.

2. Before stocking crab seedlings, all the water should be drained, the pond should be cleaned, and the whole pond should be sprinkled with quicklime for disinfection, so as to eliminate the original germs and prevent the crab seedlings from getting sick. Remove the silt at the bottom of the pond, not too much, just leave a little. The remaining sludge is then loosened and exposed to the sun for another 3-5 days before stocking.

Pay attention to setting up facilities such as aeration, drainage and irrigation and escape prevention in the pond, and make all preparations. You can also put a certain number of empty bottles, water pipes, etc. in the pool to rest. Before stocking, an appropriate amount of fertilizer should be applied to the pond to cultivate sufficient zooplankton, and the fertilizer should not be too much, otherwise the water fertility will be too large and affect the growth of crabs.

3. After making all the preparations, start stocking crab seedlings, the crab seedlings stocked in the same pond should ensure that the specifications are the same, and the size of the specifications is easy to bully the small ones, which affects the survival rate. The stocking density should not be too large, and the number of stocking per mu should not exceed 3,000, otherwise there will be a phenomenon of crabs competing for food and fighting, which will affect the growth and survival of all crabs. However, it should not be too thin, too little will reduce the vitality of the crab and easily affect the water quality.

Feed regularly, the water temperature during stocking shall not be lower than 20 degrees, and the water temperature should be controlled to be constant, so as to effectively improve the survival rate.

4. In summer, we should pay attention to the changes in water quality at any time, and replace the water at least three times a week, and the frequency of water change should be determined according to the temperature change. The amount of water to be changed needs to be decided according to the water quality and the growth of the crabs. The feeding habits of the pike crab are very poor, and they can be fed with animals such as fish, shrimp and shellfish, at least twice a day, and there is no need to feed after the temperature drops to 10 degrees in winter.

Because the lower the temperature, the worse the appetite of the pike crab, and after the temperature drops below 10 degrees, they do not eat at all. In the breeding, it is necessary to inspect frequently, observe the water quality and growth, change the water and increase oxygen in time, and find that there are sick crabs and fish them out in time to check the symptoms.

With the rapid development trend of social development, many people are now very strict about their own clothing, food, housing and transportation regulations, especially at the dietary level, not only for some applicable tastes and practicesWith the continuous improvement of living standards, the demand for meat food is increasing. Moreover, the ingredients of seafood products are also one of the indispensable delicacies of their table, and since the opening of the seafood product sales market, many people have entered the team of crab farming, as far as the current situation is concerned.

The market prospects in this area may be particularly good. Hairy crab farming in the field of aquatic product aquaculture, can be regarded as a very promising sales market. At this stage, the purchase price of giant crabs is about the same, male crabs are 3 males, 25 yuan catty; male crab 35 male, 35 yuan jin; Male crab 4 male, 45 yuan catty.

168 female crabs, 22 yuan; 2 female crabs, 30 yuan catty; Female crab 3 females, 56 yuan catty. According to the current sales market analysis, breeding crabs can make money. Because the hard shell of the human body is very similar to that of a shuttle, it is called a shuttle crab.

The meat of the crab is fat, delicious and nutritious. Therefore, many farms are breeding, generally scattered in various coastal cities, and the shadow of pike crabs can often be seen in coastal areas, but it is very difficult to eat the freshest pike crabs in inland areas. To prepare a pond in advance that is to use pike crabs, I don't need to talk more, everyone should also know that pike crabs are a small animal in the deep sea, and the needs of water bodies can be said to be particularly high, and it is necessary to select ponds in saltwater lakes must not only have abundant water resources.

And the water body should also be very clean. Generally, choosing some fish and shrimp very rich water resources can not only improve the replacement of some O2 of water resources, but also give some sufficient natural ingredients to the pike crab, do a good job of some irrigation countermeasures, and complete the replacement of water resources more conveniently and quicklyIt is best to put a little fine sand on the steep slope to achieve their preference, and the water in the pond should be kept at four to six meters.