Crayfish Culture Technology
The Australian red crayfish is one of the finest species of crayfish in the world. It has the advantages of rapid growth, less disease, fresh taste, and easy culture. It has become an excellent breed in the world in recent years. The shape of the red clam crawfish is similar to that of the crayfish crayfish, and the body color varies depending on the habitat, and is generally blue-blue or green-brown and has a smooth body surface. Chaetoceros is a freshwater prawn species, but there is a certain degree of salinity. Young larvae can adapt at 3 pupa and 5 pupa. The survival temperature range is 10-33°C (similar to tilapia) and the optimum growth temperature is 22-32°C. Chaetoceros is omnivorous crumb food, juvenile shrimp mainly animal feed, shrimp and animal feed, food can be fed artificial feed.
I. Pond conditions
It requires sufficient water sources, good water quality, convenient drainage and drainage, an area of ​​1-5 acres, and a water depth of 1-1.5 meters. The ingress and egress of the water should be covered with a net cover to prevent enemy damage and prevent flight. About 15 days before the release of the seedlings, The whole pond is splashed with lime slurry, and the amount is 150 kg per mu. Three days later, the disinfected bricks and tiles and old tires were placed as concealed objects. One week later, plants such as Vallisneria and Sagittaria were transplanted. Plants and water plants were planted at the bottom of the pool for the purpose of avoiding the enemy’s habitat and 60 cm of water was added. Fertilizer and water. If aquatic plants are not grown, they can be planted with terrestrial plants and placed at 0.8-1m in ponds. Put one at a time every 4-5m and put 30-40 per acre.
Second, put the seedlings
In Liaoning Province, the nursery will be planted in about the middle of June. 5000 acres of 3-5 cm shrimp will be placed on the acre or 3,500 shrimps of 6-9 cm.
Third, daily management
1. Feeding. About 3 cm of shrimp will be fed 10-20 mesh juvenile shrimp with bait, 3 cm after the vote into the shrimp with the bait, and with fish, small fish, shrimp, soybeans and bean dregs. Feed twice a day, before 6 o'clock in the morning and after 6 o'clock in the afternoon, where the amount of afternoon feeding accounts for about 70% of the total amount of the day. The amount of feed is based on the specifics of shrimp eating and activities and generally accounts for 4%-6% of shrimp's body weight.
2. Water quality management. Keep the water quality fertile, live, and cool. Add new water every half month or so, fill in 15 centimeters each time, and keep the water level at 1.2-1.5 meters until late July. Under normal circumstances, the red-claw crayfish are actively feeding by the pool in the evening and at night. The dissolved oxygen in the pool is about 2.5 milligrams per litre. When the ammonia nitrogen exceeds 0.3 milligrams per liter or the nitrite nitrogen is high, the crawfish can be seen during the day ( Especially in the morning) When crawling towards the pool, add water or change water in time, otherwise it will cause death.
3. Management. Always visit the pond and observe the growth and activity of the shrimp. If abnormalities are found, take measures in time. At night, if the floating head can start the aerator.
Fourth, breeding prospects
Acre put 3-5 cm of shrimp 5000, if properly managed, 150-350 kg per mu, specifications 50-100 grams per end, according to the current market price of 120 yuan per kilogram estimated to obtain good economic benefits.
Anesthesia ventilator disposable breathing bags are elastic and are available as disposable and reusable variants. Disposable bags, in comparison to reusable variants, are usually thinner and lighter, yet they provide reasonable durability. Generally, the reservoir bags are made of natural rubber (latex); however non-latex versions are also available for subjects with latex allergies. To improve the grip, they are usually textured. However, hourglass-shaped breathing bags are also available to allow better grip.
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4 Validity Period: 3 years.
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