A: Generally, 30 pounds of seed shrimp are stocked per mu, which can produce 100-150 kilograms of commercial shrimp without baiting. Each lobster can reproduce about 200 young shrimp, survive about 100. Net profit can be up to about 1,000 yuan / mu. 2-3 years later, even if not put seed shrimp, mu yield can be up to 100 kilograms. If you improve the degree of intensification of lobster farming to bait farming, mu yield can generally reach about 400 kilograms, mu flat income of up to 2,500 yuan.
2, the current breeding of lobster is what species? Currently there are new varieties?
A: The world **** there are more than 400 varieties of lobster, lobster with important economic value of the original crayfish, crayfish, Pacific crayfish and fork-limbed crayfish and other species, of which the Crayfish accounted for the entire lobster production of 70% -80%. China is one of the least distributed lobster, there are only four species, namely, Croaker crayfish, Northeast crayfish, Shi's crayfish and Korean crayfish. The latter three are distributed only in the three northeastern provinces. What we call lobster refers to the lobster crayfish, lobster for short. Lobster in animal taxonomy belongs to the arthropods, crustaceans, crayfish genus. Also known as Crayfish, Crayfish or freshwater crayfish, is a small and medium-sized freshwater crayfish species
Lobster native to North America, is an important species of freshwater shrimp farming in the U.S. In 1918, Japan will be the crayfish as a bullfrog bait from the U.S. introduction, and in Japan a large area of reproduction and proliferation. During World War II in 1938 lobster from Japan into China, initially in Nanjing, Jiangsu Province, as well as suburban counties to reproduce, with the expansion of natural populations and human farming activities, is now widely distributed in China's northeastern, northern, northwestern, southwestern, eastern, central and southern China and Taiwan, has become an important resource of freshwater shrimp in China.
As far as I know, the current lobster has not been cultivated new varieties, some new varieties that we see on the Internet, said acres of up to 7,000 pounds, the individual weight up to half a catty varieties are suspected of manipulation. In fact, the largest individual lobster not more than 1 two 2 money.
3, lobster farming has those advantages?
A: Lobster's adaptability, fast reproduction, rapid migration, like digging holes, on crops, embankments and agricultural water conservancy facilities have a certain destructive effect. But the lobster's ability to dig holes, and the speed of movement on land are much weaker than the Chinese velvet crabs. On the whole, lobster as an aquatic resource for human beings is more advantages than disadvantages, has a high development value. As a culture of species lobster has the following advantages:
One: lobster is more adaptable to the environment, less disease, can grow in lakes, ponds, rivers and ditches, rice paddies and other bodies of water, the breeding conditions are not demanding, breeding technology is easy to popularize.
The second: lobster can be directly converted from plant to animal protein, and faster growth, generally by 3-4 months of breeding, can reach the market specification, and thus has a high energy conversion rate.
Third: lobsters are omnivorous, to ingest organic debris in the water column, aquatic plants, and animal carcasses, without the need to feed special feed, not only low-cost aquaculture, but also fast-growing, high-yield, good benefits.
The fourth: lobster fishing method is simple, can be a long time out of the water, transportation is convenient, transportation survival rate is high. In the fishing and transportation of products on labor-saving, time-saving, low-cost, farmed fish and other shrimp can not be compared.
The fifth: lobster flavor, nutritious, is our country's urban and rural masses of home cooking, but also our country's freshwater aquatic products are the main export species, by the domestic and foreign markets are welcome, the product demand exceeds supply, the market has broad prospects.
4, lobster aquaculture water body to have what facilities?
A: First, there should be good intake and drainage facilities,. Second, the pond should be surrounded by bamboo sheets, netting, asbestos tiles, cement tiles, etc. surrounded by a 50-centimeter-high anti-escape wall. Third, the aquaculture waters set up shrimp habitat. Such as the installation of stones, tiles, bricks, nets, grass rakes, old tires and other shrimp nests for shrimp hidden habitat and defense against hostile. Fourth, planted around the pool peanuts, wild rice, water hyacinth, water hyacinth and other aquatic plants, its coverage is generally 1/3 of the surface of the pond, in order to facilitate the lobster shade and nourishment for the lobster love to eat aquatic organisms. Fifth, to lobster aquaculture water in the stocking of shrimp fry shrimp species before using lime water with water to clear the pond, 200 kg / mu or 100 kg / mu of lime with dry pool disinfection. If the use of old ponds or lakes for lobster, but also dredging, trimming, exposure. At the same time completely eliminate the pond loach, catfish, blackfish and snakes, rats and other wild enemies, before entering the water to install a good water separator (60-80 mesh), to prevent the entry of enemies in the water. Sixth, in the shrimp fry shrimp seed stocking 10-15 days before the general application of pig manure and other fully rotted manure 200-400 pounds / mu, cultivate plankton and provide the right amount of organic debris for shrimp feed.
5, what kind of water suitable for lobster?
A: Lobster is more adaptable to the environment, as long as the water supply is sufficient, the water depth can maintain about 1 meter of water bodies are able to raise lobster. Ponds, rice paddies, lakes, rivers and ditches and other bodies of water can culture lobster. However, lobsters like to dig holes, reservoirs, rivers and ridges have a certain destructive effect, so reservoirs and rivers and other bodies of water are not easy to culture lobster.
6, how to adjust the water quality of lobster farming?
A: The impact of water quality on lobster production can not be ignored. Good or bad water quality directly affects the healthy growth and development of lobster, aquaculture process, the pool water PH value to maintain between 7.5-8.5. Lobster growth, metabolism, oxygen consumption, so the shrimp pond water quality should be kept fresh, add water 15-20 cm deep every week, to ensure that the water quality is fresh, clean and crisp, and there is enough dissolved oxygen, water transparency control in the pool 35 cm deep or more, to often refill new water, regularly sprinkle quicklime solution to regulate the water quality, prevent disease and shelling attempts. When the weather is too hot, we should properly deepen the pool water to stabilize the pool water temperature. Strictly prevent the water quality by industrial pollution, pesticide pollution and chemical pollution.
7, breeding lobster how to feed management?
A: Lobster farming should be reasonable feeding feed. Lobster in the case of hunger and insufficient feeding, will kill each other, so the bait must be sufficient. Lobster is omnivorous, animal and plant bait can be eaten. Plant feed wheat, watercress, rapeseed cake, etc., animal feed miscellaneous fish, mussels and animal offal. Usually according to the habits of lobster day and night and the density of shrimp in the pool to determine the feeding time, feeding amount and feeding method. Otherwise, it will increase the feed plus cost, reduce the breeding efficiency.
Generally put shrimp fry to be within 3 days, cast to stranded small fish and minced meat, 3 days after 1 month to put small mixed fish, minced meat or with feed, to be shrimp fry grow to 6-7 cm, can be fed all the rolled snails, mussels and appropriate amount of plant-based feed (such as gluten, wheat, cake meal, corn, etc.) or with feed. Daily feeding to eat, eat, no residual bait shall prevail, generally in the middle, crayfish according to 15-20% of body weight feeding, adult shrimp according to 5-10% of body weight feeding, specific can be adjusted according to the shrimp's eating situation. Feed 2 times a day, once in the morning and evening, evening feeding accounted for 70% -80% of the daily feeding, the bait should be cast around the pond, and properly dispersed, lobsters concentrated in the appropriate place to cast more, in order to facilitate their feeding.
8, how to stock shrimp fry or seed shrimp?
A: stocking seed shrimp generally in September each year. To the following year in May to June to catch commercial shrimp on the market. It is best to buy seed shrimp near the selection of large, hard crustacean lobster. When seed shrimp is in short supply, you can buy the species in advance of the immature lobster as a preparatory seed shrimp, breeding in September. Breeding commercial shrimp and seed shrimp, stocking seed shrimp 15-20 kilograms / mu, breeding shrimp fry stocking seed shrimp about 50 kilograms / mu.
The stocking of shrimp fry is generally carried out in March-May each year. Stocking 2 cm long juvenile shrimp 20-25,000 tails or 30-60 kg or so/mu, 3-5 cm long juvenile shrimp 1-1.5 million tails or 80-120 kg or so/mu. Shrimp fry, shrimp seed stocking should be carried out in the morning and evening on a sunny day, the same aquaculture water body stocked shrimp fry, shrimp species specifications require neat and consistent. At the same time with a certain number of flowers, silver carp species to regulate water quality, increase fish income.
9, how to catch lobster?
A: Generally speaking, shrimp fry feeding 2 months or so can reach a weight of 30-50 grams above the commercial shrimp specifications. shrimp fry put in March or the first year in September put the shrimp species, in June or so you can begin to rotate the commercial shrimp. Fishing lobster using shrimp cage, purse seine, cage and other tools to catch, fishing process to take big to stay small method. As a result of catch and leave a small, round catch and release, can improve the rate of return, sell a good price, to achieve the purpose of high yield and efficiency.
10, how to prevent diseases of lobster farming?
A: Lobster has a strong resistance to disease, in general, in the process of aquaculture lobster, if the degree of intensification is not high, mu production of lobster in the 200 kilograms or less, as long as there is no contaminated water into the aquaculture water, or the use of pesticides and other hazardous substances, the lobster will not get sick or die. But in the breeding of lobster, prevention and control is also necessary.
In the prevention of hostile, to remove the moss in the water in a timely manner; often check the inlet and outlet filters, to prevent the filter breakage and make the lobster escape or wild fish and other harmful organisms into the pool, pay attention to the pool whether there are hostile organisms, such as water rats, snakes and so on.
In terms of disease prevention, it is necessary to do before shrimp seeds and shrimp fry in the pond to disinfect the body surface, with a concentration of 3% of salt water on the shrimp body for 5-15 minutes of immersion, to prevent the pathogens brought into the pool. Usually also regularly use lime to disinfect the shrimp pond, every 10 days or so splashing 1 lime water, concentration of about 10 grams per cubic meter. Often refill new water, keep the pool water clean and sanitary. You can also add a variety of vitamins in the shrimp feed to enhance the immunity of shrimp. Should be diligent inspection, diligent pond patrol, pay attention to lobster feeding, activity, growth and moulting and so on.