First aid Crayfish cultivation method 50 points breeding technology

Can't be kept with baby turtles!!

The method of raising crayfish has been said very well, the key is to practice, and knowledge can be increased in practice!

3. The influence of the living environment on lobster burrowing.

The influence of water bottom conditions on lobster burrowing is obvious, and there are more lobster burrowing phenomena in sandy soil with lack of bottom organic matter, while there are less holes in hard soil. Under the conditions of fertiler water quality, more silt at the bottom, and abundant organic matter, the lobster burrows are significantly reduced. However, regardless of the living environment, the number of lobster burrows increases significantly during the breeding season.

All I know is that you can't put too much water.

Crayfish are highly adaptable to the environment and can grow in various water bodies such as lakes, ponds, ditches, and rice fields.

The water source should be sufficient, and the water depth should be about 1 meter. The pond must have sufficient water source, good water quality, convenient water intake and drainage, and the area is generally 3 acres and 5 acres.

The ridge of the pond should have a certain slope, and in order to avoid the escape of crayfish burrowing, the width of the ridge should be more than one meter, and the anti-escape wall or anti-escape board with a height of one meter and a smooth inner wall should be set around the ridge.

Crayfish 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.

Pond preparation The pond is suitable for 8-10 acres, which requires sufficient water sources, convenient inlet and drainage, water depth, flat bottom and less silt. 10 cm of water in front of the clear pond, 100 kg of quicklime slurry per mu is used to splash the whole pool, and 30 cm of water enters after 10 days. Aquatic plants such as black algae, elophylla and aquatic flowers were planted before the shrimp seedlings were stocked, and the aquatic weeds covered area accounted for 40%-60% of the pond area.

After planting aquatic plants, apply 15 kg of phosphorus fertilizer or 150-200 kg of well-rotted organic fertilizer per mu.

Seed release requires shrimp seedlings to have a strong physique, complete appendages, no disease and no injury; The shrimp seedlings stocked in the same pond are required to be of the same size, generally stocked in December or March to April of the following year, and 50 kg of crayfish seedlings of 100-200 kg per mu are stocked.

Feed feeding adopts the method of combining plant feed and animal feed. The main plant feed is corn, wheat, bran, yam, pumpkin, etc., and the animal feed is mainly pig blood, fish intestines, small trash fish, etc. The daily feeding amount of crayfish generally accounts for 6%-7% of the total weight of the shrimp in the pond, and it is fed twice a day.

Daily management The transparency of the water body is kept at 25-30 cm, and the new water is added every 5 days in the early stage of breeding, and the water is changed once a week during the high temperature period from July to August, and the water depth is maintained by meters, and 10 kg of quicklime is applied per mu once a month to promote the growth and peeling of juvenile shrimp. Patrol the pond once a day in the morning, noon and evening to observe the eating and growth of crayfish.

Disease prevention and control adhere to the principle of "prevention first, prevention is greater than cure", in addition to the regular use of quicklime disinfection in the pond, microbial preparations should also be applied regularly according to the water quality and crayfish activities to create a good environment and maintain the normal growth of crayfish.

Catch crayfish in a timely manner according to market demand and growth specifications around June.

Crayfish breeding technology includes breeding environment, seed delivery, feed feeding, daily management, and daily pond patrol.

1. Breeding environment.

Crayfish breeding water should not be too deep or too shallow, and the breeding pond should have a slope, which can better ensure the water requirements of crayfish. Then there is the problem of water quality, it is necessary to change the water frequently, and the water temperature is kept at about 10-30.

At the same time, it is also possible to plant aquatic plants such as aquatic plants in the pond. Aquatic weeds not only purify the water but also ensure the quality of the water and also provide a place for the crayfish to rest.

2. Seed placement.

From late March to late April, 4,000 crayfish seedlings were put into each mu using the overwintering seedlings of the improved seed pond. The stocking density should not be too high, even if the intensive breeding density of the pond mouth should be controlled at 80-100 catties per mu, and the density of the polyculture mode should be reduced to 50-60 catties per mu. Excessive seed stocking density will bring great pressure to the pond environment and management.

3. Feed feeding.

In addition to the natural bait provided by the aquaculture water, artificial auxiliary bait feeding is also extremely important in the artificial cultivation of crayfish. According to the different growth seasons of crayfish, bait with different diameter and protein content is selected. The bait should be fed appropriately, and it is resolutely not too much feeding.

4. Daily management.

The water level is determined according to the change of water temperature, which is generally maintained at 1 meter in spring and 1 meter in summer when the water temperature is high. The dissolved oxygen content of shrimp pond water is kept at about 4 milliliters, which is more suitable for the growth and development of lobsters.

The most suitable pH range for lobster is 7, and quicklime water can be splashed every 15 days, and when the average water depth is 1 meter, 10 kg per mu is used to keep the pH value of the pool water between 7.

5. Daily patrol imitation Latang.

Crayfish breeding management is not difficult, now the technology is very mature, Yinling and the breeding mode is also diverse, but the difficulty lies in how to do a good job in scientific daily management. There is no shortcut to crayfish farming, and if you want to increase the income of farming, you must do a good job in every aspect of the breeding process.

1. If the crayfish should be farmed better, the temperature should be suitable for the growth of crayfish, and the survivability of crayfish is relatively strong, but the most suitable temperature for crayfish survival is generally concentrated in about 20 to 30 degrees, and attention should be paid to regulating the temperature.

2. In order to ensure the survival rate of crayfish, there are also requirements for water quality, the water should be disinfected in advance, and if the water is weak and alkaline, it will help increase the edema of organic matter, which is suitable for the survival of crayfish.

3. Although the breeding of crayfish needs to plant some phytoplankton, such as water hyacinth, etc., the fecundity of water hyacinth and other plants is relatively strong, pay attention to control the amount of phytoplankton, avoid too much phytoplankton, and lack of oxygen in the water body.

4. Because shrimp like dark places, they generally like to hide in places with aquatic weeds, and the rhizomes and leaves of aquatic weeds can also be used as food for shrimp, so friends who breed shrimp can plant a certain amount of aquatic weeds in the pond.

5. Friends who breed crayfish should also set up some natural enemies to prevent lobsters such as rats and snakes, so as to avoid the loss of lobsters due to natural enemies.

6. Breeding lobster is not the clearer the water, the better, too clear, the survival rate of lobster is not high, it is recommended that the water of breeding lobster is the most suitable when it is blue-green, and the transparent visibility of the water can generally be controlled at 30 to 40 cm, which will be more suitable.

The tips for farming crayfish are as follows:

First, pond conditions. The water surface of the pond should not be too large, it needs to be far away from the pollution source, the suitable area is one acre to two acres, the suitable water depth is one meter to five meters of a limb lying point, and the pond should have a perfect drainage system and aeration system, and the bottom of the pond needs to have a slight slope and no leakage.

Second, disinfection. Before stocking, the pond must be cleared, and the debris and weeds must be removed to avoid predators and pathogens left in the pond, and at the same time, 150 to 200 kg of quicklime must be disinfected per mu of water surface.

Third, anti-escape. Lobsters like shade and fear light, and will crawl out of their burrows when the light is weak or dark, so a 50-centimeter-high escape net should be added around the pond to prevent escape.

Fourth, delivery. The stocking density can be determined according to the size and specifications of shrimp, and the juvenile shrimp with a general size of more than centimeters can be stocked with 30,000 to 40,000 per mu.

Fifth, the reservoir environment. The pond simulates the ecological environment of lobsters under natural conditions, and 10% to 15% of aquatic plants and concealments can be planted shallow at the edge of the pond to create an environment for lobsters to inhabit and shed.

1. To raise crayfish, we must first see whether the local environment is suitable for the growth of crayfish. If it is close to cold areas such as Heilongjiang, it is not recommended to do crayfish farming, which will affect its reproduction and survival.

2. If the environment is suitable, you can prepare a piece of land and pond for aquaculture. The area should not be too small, at least 2 to 3 acres, and the water depth should be about one meter. The pond stalk should be ramped to prevent the crayfish from escaping.

Before putting crayfish seedlings, the bottom of the pond must be strictly disinfected to eliminate germs.

3. After disinfecting the bottom of the pond, some aquatic plants should be planted in the breeding pond, such as water hyacinth, which can effectively provide crayfish with a place to avoid natural enemies and roost.

4. 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 are eaten at night, and the amount of feeding at night is about twice as much as that during the day.

5. Although crayfish does not have high requirements for water quality, it is necessary to change the water frequently, and in summer, it is necessary to change the water about once a month or so.

6. Shrimp seedlings can be slaughtered and sold after three to four months. The size of the adult shrimp is more than 30 grams. There are many ways to catch fish, such as casting nets, releasing shrimp pots, etc.