Many people like to eat crayfish, will it be easy to raise crayfish?

There are many uncertain factors in breeding crayfish, and there are many crayfish that will die in the breeding process, so these phenomena are very difficult to grasp.

To find a suitable breeding place, there are no polluted water ponds or lakes, rice fields, etc., must have sufficient water sources, good water quality, water intake and drainage are more convenient, followed by the breeding pond to change the bottom of the disinfection, do a good job of anti-escape facilities in general, the new lobster pond can be used with quicklime water with water to clear the pond, 100 kg per mu, if the use of old ponds or lakes to raise lobsters, to dredging, trimming, exposure, stocking shrimp seedlings 10-15 days, each mu with quicklime 50 kg dry pond disinfection. The **, which was initially acquired from more than 30 yuan, has risen to sixty or seventy yuan. Then no one would have imagined that in just a few months, the ** of crayfish even fell to a few dollars a pound of acquisition**.

If you specialize in lobster farming, you need to calculate the time of putting shrimp seedlings and the time of harvesting, and do a good job of disinfection before putting shrimp seedlings, and usually manage shrimp seedlings. If it's a pond, you should also plant some aquatic plants. After placing the shrimp seedlings, a certain amount of shrimp food should be fed every day, twice in the morning and evening, because most of the crayfish eat at night, and the amount of feeding at night is about twice as much as that during the day.

Apply sufficient base fertilizer: apply 500 600 kg of decomposed livestock and poultry manure per mu to cultivate rotifers, cladopods and copepod plankton to provide palatable bait for shrimp seedlings and shrimp species.

Crayfish prefer to crawl and do not like to swim, crawl forward when foraging and activities, and quickly backward when frightened or encounter enemies, bouncing and dodging. Crayfish are very sensitive to heavy metals and some pesticides such as trichlorfon, pyrethroid insecticides, in the state of low oxygen, crayfish do not like to eat and grow down, and easy to cause escape and disease, as long as the crayfish are found to be collectively landed, immediately carry out water quality reconciliation, especially in the middle and late stages of breeding, to change the water once or twice a week.

Crayfish technology has made a breakthrough at present, the risk of breeding is not large, but at least 40% of the farmers are loss-making, 30% are dry, less than 20% can be profitable, at present, most of the farmers are purchased from the market, or buy from the shrimp dealers at a low price, these inferior seedlings will die in large numbers after entering the water (generally after three days), and the farmers are completely unaware. Due to the wild nature of lobsters, serious cannibalism, and also involving core key technologies such as feeding, water quality, aquatic weeds, diseases, and site construction, it is very difficult to breed high-density culture. Generally speaking, when the lobster reaches more than 350 catties per mu, the difficulty of breeding increases, and when it reaches more than 600 catties per mu, the technical requirements are very high, and it is much easier to raise crayfish than to raise fish, but it is much more difficult to raise good crayfish than to raise fish.

Actually, it is very easy to farm crayfish. Prepare a pond mud floor for the crayfish to survive well, feed the food regularly, and check the environment of the crayfish regularly, so that the crayfish can grow up healthy.

Farming crayfish won't be easy. First of all, it is necessary to choose the breeding site, which should be easy to enter the water and easy to drain, so that it is convenient to change the water for the crayfish. Before putting seedlings, the breeding pond should be thoroughly disinfected, and high-quality shrimp seedlings should be selected to be put inIn the process of breeding, it is necessary to prevent crayfish from escaping, as well as diseases and so on, in short, breeding is risky, and investment needs to be cautious.

What are the adaptation and stress responses of artificially farmed crayfish to the environment?

1. Bait feeding impact: crayfish artificial breeding uses synthetic bait sold on the market, which is already an open secret, because the main purpose of synthetic bait, whether it is puffed or granular bait, is to shorten the growth cycle of crayfish and let crayfish grow rapidly, followed by to make crayfish grow rapidly, so artificially cultivated crayfish are still relatively loose in terms of taste, and they are not as good as crayfish grown in wild rivers and lakes. This is one of them, and secondly, synthetic feed will definitely contain some artificial hormones, which is also an indisputable fact, but the content of human growth should not be particularly large.

2, the impact of fertilizer and water: at present, the most popular mode of artificial breeding of crayfish is nothing more than two, that is, rice and shrimp field breeding mode and pond culture mode, no matter which mode requires fertilizer hydroponic algae culture, at present, fertilizer water is mainly poultry and livestock manure and rice stubble and straw, these farmer organic fertilizer contains different layers of hormones, pesticide residues and heavy metal ion residues, for crayfish, are harmful substances, and these harmful substances have an enrichment effect, will remain in the crayfish body can not be effectively transformed, and finally we eat into the stomach, absorbed by the human body, harmful to health.

3. The influence of drugs to regulate water quality: artificial breeding crayfish is in the purpose of regulating water quality, and will often use drugs, at this time, farmers may use drugs containing heavy metals, such as copper sulfate solution, potassium permanganate solution, etc., after the use of these drugs, heavy metal ions will be released, some are absorbed by aquatic plants and some are absorbed by crayfish and remain in the body, forming poisonous shrimp.

Whether it is wild crayfish or farmed crayfish, the premise of eating it is safe to eat is that it must be cooked thoroughly.

Crayfish are also known as crayfish, crayfish, and freshwater crayfish. It is a freshwater economic shrimp that is popular because of its delicious meat. Because of its omnivorous nature, fast growth rate and strong adaptability, it has formed an absolute competitive advantage in the local ecological environment.

Crayfish have a high protein content in the body, and the meat is soft and easy to digest; Shrimp meat is also rich in magnesium, zinc, iodine, selenium, etc., magnesium has an important role in regulating heart activity, can protect the cardiovascular system, it can reduce blood cholesterol content, prevent arteriosclerosis, and at the same time can also dilate coronary arteries, which is conducive to the prevention of hypertension and myocardial infarction. Crayfish contain astaxanthin, a powerful antioxidant that helps eliminate jet lag. In addition, crayfish can also be used as medicine, which can dissolve phlegm and relieve cough, and promote the healing of wound muscle after surgery.

Crayfish are popular in a variety of dishes because they are larger than other freshwater shrimps, have more meat, and are delicious because of their delicious meat.

Which parts of crayfish should not be eaten.

1.Shrimp line. Generally speaking, the digestive system such as the intestines of crayfish is often prone to accumulate heavy metals, so the shrimp line should be pulled out before cooking. The shrimp line on the back of the shrimp is the waste of the shrimp that has not been excreted, and if you eat it with a muddy smell in the mouth, it will affect the appetite, so it should be removed.

2.Shrimp head. Usually the whole shrimp is cooked together in the process of shrimp cooking, so many diners will also eat the shrimp head in the process of eating shrimp, but did you know? It is best not to eat shrimp heads, because in the process of shrimp growth, some harmful metal elements will be deposited in the head, if people eat shrimp heads, these harmful metal elements will also have a certain impact on people's health.

Precautions for eating crayfish.

1.Wild crayfish should not be eaten.

Usually, when you eat crayfish, it is best to choose artificially farmed crayfish, because the number of artificially farmed crayfish parasites is relatively small, and there are a large number of parasites in those wild crayfish, which are not suitable for human consumption, otherwise a large number of parasites will appear in people's bodies, harming health.

2.Crayfish should not be consumed in excess.

Although crayfish is good, you must pay attention to the amount when eating it, and you can't eat too much. Because crayfish is a hot ingredient, people will aggravate the body's heat poison after excessive consumption, and there will be a variety of symptoms of fire, and another point is that the sanitary conditions of crayfish are not safe, and excessive consumption will also be detrimental to health.

It is difficult to raise lobsters because there is no experience, but you can't use failure as experience, so you have to raise them with people, and the YB crayfish farming here has been more than ten years 211.

Whether it is good to raise crayfish or not, this specific problem is analyzed in detail, and what suits you is good.

Key points for raising crayfish:

1. Select a pond.

The water source requires fresh water quality, sufficient dissolved oxygen, and no pollution. Loam clay is better, the width of the pond ridge is more than 3 meters, the slope is 1, the water depth is meters, the pH value is, the pond area should not be too large, generally 3 8 acres is appropriate, rectangular, east-west. When pouring new water into the pool, it should be filtered with 20 to 40 mesh gauze to prevent wild trash fish and fish eggs from entering the pool with the current.

In accordance with the pattern of high irrigation and low drainage, build drainage canals to achieve irrigation and drainage. Crayfish have a strong ability to escape, so it is necessary to do a good job in the construction of anti-escape facilities. Usually use plastic film, mesh, calcium-plastic board or cement board to erect anti-escape facilities along the perimeter of the pond ridge to prevent the entry of predators and the escape of crayfish.

2. Plant aquatic plants.

Aquatic weeds, in lobster farming, occupy a pivotal position, the first aquatic grass can fill the lobster bait intake insufficiency, supplement a large number of vitamins; second, it can prevent wind and waves, absorb some harmful substances in the water body, purify water quality, and balance the water environment; Third, it can provide shelter and habitat for juvenile shrimp and shelled shrimp, and reduce bullying the weak with the strong. Generally, it is advisable for the planting area of aquatic plants to account for half of the total area of the pond. Varieties are available:

Low-stemmed reeds, cocoons, elophylla, black algae, etc. If conditions permit, you can also put some empty cans, bamboo tubes, tree roots and other wastes at the bottom of the water body, which are the favorite habitats of crayfish.

3. Fertilization of shrimp ponds.

What are the ways to raise crayfish? Some people think that it doesn't matter whether the pond where lobsters are farmed is fertilized or not, in fact, applying an appropriate amount of organic fertilizer to the shrimp pond after lobster stocking can provide natural bait directly for shrimp after entering the pond. 400 kg of fermented organic fertilizer is selected to maintain the corresponding fertility of the pool water.

In the process of feeding, with the gradual deepening of the water level, it is necessary to apply decomposed organic fertilizer, and the choice of amount and time depends on the fat and thinness of the water, generally not more than 80 kg each time. The transparency of the pool water is maintained at about 35 cm.

Giant lobster, also called deep-sea lobster, splendid lobster, Australian lobster. Large lobsters (true lobsters) are marine, benthic (1,200 ft) and mostly nocturnal. Australian lobster, a precious seawater economic shrimp species, is mainly produced in Oceania; It cannot be farmed in captivity.

At present, crayfish (crayfish) in China are the most widely distributed, mainly including: crayfish (crayfish, cricket) and Northeast crayfish (crayfish). Since this species has no natural predators and is a scavenger, it does not need to be fed bait, and it can automatically maintain reproduction in sewage after artificial introduction; It can carry and spread a variety of pathogenic sources (lung flukes, schistosomiasis), and is very easy to spread, endangering local ecological species.

On January 7, 2010, China's Ministry of Environmental Protection (MEP) included crayfish in the second batch of invasive alien species.

That's right, the crayfish market has been extremely hot in recent years, with the trading volume soaring, and the sales unit price has also increased year by year. The annual market gap is huge, so the crayfish industry is coveted by the layman. In fact, the enthusiasm of many crayfish farmers is declining year by year, because more and more people feel that farming is not profitable.

Why is that?

People who have made money! Will you brag about how much money I make this year? It's not high-tech.

It's just that I didn't make as much money as in previous years, and many people followed the trend and caused ** to be more chaotic. was fried ** high. Now I basically eat when I have spare money.

But it's really delicious, it used to be cheap, and you can eat it once in a while, but now you can only wait and see.

1.Family users buy live shrimp home to cook very little, the main user groups to buy live shrimp are restaurants, restaurants and other merchants, these merchants are good at calculation, good at inquiry, bargaining, basically will be "wholesale" as the excuse to reduce the price, lobster farmers breeding profits have been compressed to the minimum.

Let's talk about lobster farming in the rice field first, for example, on April 12 this year, lobster 345** is 22 yuan, 6789 is 35 yuan, the old farmers these specifications can be combined to 24 yuan, the old farmers know that this ** will only be lower day by day, only these specifications are all sold! The new farmers only sell 6789 for 35 yuan, and the new farmers lose a little bit in the feed, and the low ** in the future. Let's talk about intensive ponds, intensive ponds generally start to go down to the cage around April 20, 6789** is about 30 yuan, ** falling every day, the pond is originally shipped less, and the pond can be sold ** time Dakai up to 15 ?

About 20 days, after this half a month is the peak period of lobster death in May, and ** low every day, the output is also low, there is no **peak and death period to adjust well, no loss is to blame crayfish can really make less than three percent, can raise good really not much, are looking at people say that there is money to make, are coming, crayfish want to make money must change the breeding model, a swarm of bees, must be piled up, ** not good to talk about profit, hard work, busy work.

Note: **** on the Internet.