Seek crayfish site environmental information, crayfish breeding period date.

Crayfish must be kept away from the source of pollution at the mouth of the pond, the mouth of the pond must be drained, water storage is convenient. Crayfish have the habit of escaping back to the water, and anti-escape facilities should be set up around them, especially the water inlet and outlet, to avoid escape. Lobster fishing varies according to the stocking season, generally can choose to concentrate on fishing in June-July and November-December every year, if the introduction of wild lobster species, you need to domesticate for a period of time in advance before stocking.

1. What conditions and technologies are needed to raise crayfish?

1. What conditions are needed to raise crayfish?

1) To raise crayfish, we should first choose a pond far away from the source of pollution, and the pond should be convenient for drainage and water storage. Before breeding crayfish, the pond should be thoroughly disinfected, and quicklime can be used for disinfection products, and planktonic microorganisms should be appropriately put into the pond, and aquatic plants should be planted.

2) Crayfish have the habit of escaping back to the water, so anti-escape facilities should be set up around the pond. Especially the inlet and outlet, avoid escaping, and you can raise crayfish after it is ready, and you must pay attention to the stocking density and feeding method when breeding.

2. What technical bench line is needed to raise crayfish?

1) Scientific and reasonable fishing.

Lobster harvesting must be determined according to the stocking season, but it is generally possible to fish in June-July and November-December each year. It is also possible to catch large lobsters that have reached the market size first, and then continue to release new lobsters, so that lobsters can be caught all year round.

2) Do a good job of breeding planning in advance.

If wild lobster species are introduced, they must be domesticated for a period of time in advance before stocking. Generally, the first year of crayfish breeding is mainly to do a good job in breeding, stocking shrimp seedlings is generally carried out in summer, and lobsters that grow up in the early stage of autumn and winter and spring are mainly stocked.

Second, the breeding method and environment of crayfish

1. Seedling procurement: Shrimp seedlings must be purchased before raising crayfish. Try to purchase locally, avoid long-distance transportation of seedlings, and the windproof and dehydration of seedlings during transportation must be done.

2. Bait feeding: In addition to the natural bait provided by the aquaculture water, artificial auxiliary bait feeding is also extremely important. When feeding, you can choose bait with different diameters and protein content according to the different growth periods of crayfish, and the bait can not be fed too much.

3. Water quality management: water quality management mainly includes water level management, water quality, dissolved oxygen, etc., and the water level must be constantly adjusted according to the season, temperature, climate, and crayfish growth cycle. The water quality should maintain appropriate fertility, water color, etc., and crayfish can only grow healthily in a good water environment.

4. Living environment: The environment will directly affect the output of lobsters, and the pH value of the pool water should be ensured during the breeding process, and the transparency of Changxin is about 40cm. In order to ensure the water quality, in addition to filling the pool with new water frequently, it is also necessary to regularly sprinkle quicklime solution in the pool for disinfection.

1. Domestic crayfish breeding methods and environment.

2. Crayfish breeding methods and environment are raised by themselves.

3. Domestic crayfish breeding methods.

4. Crayfish breeding methods.

1.Container. 2.To raise crayfish, you can use plastic pots, sorting boxes, acrylic or glass fish tanks.

3.Be careful not to lower the height of the container than the crayfish's body length to prevent it from escaping.

4.Environment.

5.If there is a filtration system, it can be arranged to simulate the natural environment, place tree roots, bamboo tubes, etc. for climbing, and plant plants such as water hyacinth, rotiflora and black algae for it to avoid, perch, and feed, and the water depth can reach meters.

6.If there is no filtration system, it is recommended to raise them in bare tanks and put a small number of plants.

7.The water depth should be 3 5 cm.

8.When the water quality deteriorates, the water should be changed in time.

9.Quantity.

10.Crayfish stocking density is too large to easily cause hypoxia, fighting and other phenomena, so the family breeding so adult crayfish, each square decimeter at most one.

11.At the same time, too many males are also prone to fighting, so a female-to-male ratio of 3:1 is best.

12.Feeding.

13.Crayfish is omnivorous, both like to eat fresh trash fish and other animal bait, and like to eat soybeans, soybean cakes, corn, fruits and fresh aquatic plants and other plant bait, home breeding can be fed fish, snail meat, shrimp meat, watermelon, steamed bread, etc.

Crayfish is a wide-temperate aquatic animal, which can survive at minus 11 degrees Celsius and minus 44 degrees Celsius, but survival does not mean that it is suitable for the length of raw ears. In the process of farming, it is best to control the water temperature environment at 15-35, and the most suitable temperature for growth should be between 20 and 25. If the temperature is below 15 or above 35, then the crayfish may stop growing in this case.

There are many environmental factors that affect the water temperature of crayfish, so it is necessary to monitor the water temperature data in real time in order to do a good job of adjustment. The correct way to measure the water temperature is to choose to go to the surface water between 2 and 3 o'clock in the afternoon to measure the high temperature area, and to measure the low temperature area, you should choose to take the bottom water before sunrise.

Crayfish need to mate and reproduce in autumn, which will affect the normal growth and fishing of crayfish, so the main suitable breeding season for crayfish farming is spring. Before releasing seedlings, do a good job in temperature regulation and management to give shrimp a good living environment.

Notes:

In the case of ensuring quality, the amount of bait per day should be mastered to be full, eaten, and leave no residual bait. Feed 2 times a day, 1 in the morning and 1 in the evening. Because crayfish mainly feed at night, they feed 70% to 80% of the day's bait at night, and the bait should be cast in the shallow water at the edge of the pond.

Choose a site: Choose a pond that is far away from pollution and rich in water resources before crayfish farming. Temperature Management:

Crayfish are highly adaptable and can grow and develop normally in water temperatures of 10-30 degrees. Scientific stocking: 10,000 juvenile shrimp per mu, and the size and specifications of the dismantling should be neat.

Water quality environment: Ensure that the pH value in the pool water is about 8.

1. Choose a venue

First of all, we should choose a pond that is far away from pollution, drainage, convenient water storage, and abundant water resources, and use quicklime to thoroughly disinfect the pond before breeding crayfish, and set up water inlets and outlets.

2. Temperature management

Crayfish has strong adaptability, has a wide range of suitable temperatures, can grow and develop normally in the water temperature of 10-30 degrees, and is resistant to high temperature and low temperature, can safely survive the winter at more than 40 degrees and minus 14 degrees, when breeding crayfish, do not need to deliberately control the temperature, but need to transplant water-based plants such as goldfish algae and bitter grass in the pond, and it is advisable to cover 30% of the pond.

3. Scientific stocking

Crayfish in the pond breeding, per mu put 10,000 young shrimp is the most suitable, the size of the size of the specifications to be neat, Chang Yu stuffy and to put enough at a time, first use 4% salt water bath wash 10 minutes after disinfection, and then put into the pond, it is best to choose a sunny morning or rainy day when stocking.

4. Water quality and environment

The water quality and environmental management of crayfish breeding sites mainly include water level, water quality, dissolved oxygen, etc., water level control needs to be adjusted according to the season, temperature, climate, and growth cycle, to ensure that the pH value in the pool water is between, and the water color transparency is about 40 cm.