How much do you invest in raising crabs? the prospect of raising crabs.

With the improvement of people's living standards, people have more and more demand for delicious and nutritious food, in which crab is everyone's favorite food, which is not only delicious, but also rich in nutrients, so crabs begin to be cultured in a large area. So do you know how much it costs to raise crabs? Do you make money by raising crabs?

How much does it cost to raise crabs?

1. Stocking specifications: release specifications 3-4 grams per tail of river crab fry

2. Stocking quantity: 600 / mu

3. Farming area: 20 mu

4. feed cost: a total of 3.2 tons of feed were fed during the breeding process, totaling 20,000.

5. Seedling cost: 9600

6. Crab medicine and electricity: 3000

7. Aquatic plants and snails: 14000

8. Pond rent: 24000

9. Total cost: 74180.

The prospect of crab culture

Raising crabs still makes money, the key is to have technology, to have professional guidance to raise crabs, to choose high-quality crab seedlings, and to choose good water resources, geography and climatic conditions, and then high-priced high-quality crabs are listed in high-price areas. China's crabs formed the industrial scale in the early 1990s, and then developed rapidly with an average annual growth rate of about 30, 000 tons, reaching 45000 tons in 2006. it has become a world-famous and unique emerging aquatic industry in China. It has experienced three landmark development stages from coastal to inland, from natural fishing to artificial ecological breeding, and from rough breeding to purse seine intensive breeding. We can proudly say that China's river crab industry is among the best in the world in terms of industrial scale, basic theoretical research and the promotion of practical technology in breeding.

With the improvement of the economic level of Chinese residents, great changes have taken place in the food consumption structure of ordinary people. Hairy crabs have entered the dining tables of ordinary people, and consumers have higher and higher requirements for the appearance and taste of hairy crabs. In this way, the selection of river crabs is becoming more and more strict, not only with large specifications, but also with "yellow fat". Therefore, some high-quality crabs such as red paste crab, selenium-rich crab and clear water crab in the market are favored by consumers, so the first direction of raising crabs in the future is quality.

Skills of raising crabs in lakes and ditches

Crab species cultivated in natural water bodies have good environmental conditions, sufficient natural bait, low cost, large market size and good quality. But the recapture rate is low. According to the current culture methods, it can be divided into:

1. Release of crab species in lakes and ditches: this breeding method has a history of several decades. In the 1960s and 1970s, crab seedlings were released in lakes and ditches; in 1980s, young crabs were released; in recent years, in addition to young crabs, one-year-old crabs were also released, all of which had obvious results. However, this kind of culture method usually does not use bait, and its production result is greatly affected by natural factors, so it still belongs to rough culture. Stocked water requires good water quality, lush water plants, slow flow rate, few nozzles connected with the outside world to have better benefits, generally the recapture rate of adult crabs is only 0.5% and 5%.

2. Crab culture in lake net: select the water area with lush grass, good water quality, gentle flow and moderate water depth in the lake, and arch it into a certain area (ranging from tens of mu to hundreds of mu). According to the growth requirements of river crab, bait intensive culture. This culture method absorbs the advantages of raising crabs in ponds and lakes, which has the advantages of good water quality, large activity space, sufficient bait, sparse density, large size, good quality, recapture rate of 40% and 60%, low cost and high benefit. Usually, adult crab l5kg~30kg can be produced per mu, and high-yield net crab culture can reach 65kg per mu.

Daily management and disease prevention

1. Keep patrolling the pond every morning and evening, observe the feeding and growth of river crabs, check whether there are holes in the pond ridge or block, whether the escape prevention facilities and the net cover of the inlet and outlet are damaged, and prevent the invasion of escaped crabs and enemy attacks.

2. The river crab has higher requirements for water quality, such as dissolved oxygen more than 4 mg per liter, pH 6.8-8.7, and transparency about 40 cm. If it is found that most river crabs come ashore, spit out foam, and breathe oxygen in the air, especially during the day, a large number of river crabs climb out of the water without going into the water, or as soon as they get into the water, they come ashore again, indicating that the water quality is deteriorated or seriously lack of oxygen. Chen water should be replaced quickly at this time. In addition, the whole pond should be sprinkled with raw calcareous water regularly to improve water quality, increase calcium, promote the growth of river crabs and molt smoothly.

3. It is easy to cause all kinds of diseases of river crabs in high temperature season. Prevention is more important than treatment, supplemented by drugs. Parasites can be sprinkled with 0.005 ‰ ~ 0.01 ‰ formalin or other appropriate insecticides in the whole pool, and bacterial venereal diseases can be disinfected and sterilized in the water body for two or three times, and the effect will be better if the whole pool is sprinkled with bait.

The above is the editor for you to analyze the prospects of crab culture, I hope to be able to help you. In fact, people's demand for crabs is gradually increasing, and even once the demand falls short of supply, and breeding crabs has also brought benefits to many farmers, so there are certain prospects for breeding crabs.