What conditions and techniques are needed to raise crayfish?

What do you need to raise crayfish? (1) To raise crayfish, you should first choose a pond far from the pollution source. It is convenient to drain and store water in the pond. Before raising crayfish, the pond should be thoroughly disinfected. Disinfection products can use quicklime and add phytoplankton and aquatic plants appropriately. (2) Crayfish have the habit of escaping back into the water, and escape prevention facilities should be set around the pond. Especially the water inlet and the water outlet, to avoid overflow. You can raise crayfish when you are ready. We must pay attention to stocking density and feeding methods when breeding. 2. What skills do you need to raise crayfish? (1) Scientific and reasonable lobster fishing must be decided according to the stocking season, and it can generally be caught in June-July and11-65438+February every year. You can also catch large lobsters that meet the market specifications first, and then continue to put in new lobsters, so that lobsters can be caught all year round. (2) Make a feeding plan in advance. If wild lobster species are introduced, they must be domesticated for a period of time before they can be released. Generally, the first year of crayfish culture is mainly to do a good job of breeding. Shrimp fry culture is generally carried out in summer, and lobsters that grew up in the early stage are mainly stocked in autumn, winter and spring. Two. Crayfish culture mode and environment 1. Purchase of fry: Be sure to buy shrimp fry before raising crayfish. Try to purchase locally to avoid long-distance transportation of seedlings. During transportation, the seedlings must be well protected from wind and dehydration. 2. Bait feeding: In addition to natural bait provided by aquaculture water, artificial auxiliary bait feeding is also extremely important. When feeding crayfish, you can choose different diameters and protein contents according to different growth periods, and you can't feed too much bait. 3. Water quality management: Water quality management mainly includes water level management, water quality and dissolved oxygen. The water level must be constantly adjusted according to the season, temperature, climate and crayfish growth cycle. To maintain proper water quality, such as fatness and color, crayfish can only grow healthily in excellent water environment. 4. Living environment: The environment will directly affect the output of lobster. In the process of culture, the PH value of pond water should be between 7.5 and 8.5, and the transparency should be about 40cm. In order to ensure the water quality, in addition to injecting fresh water into the pond regularly, it is also necessary to spray quicklime solution into the pond regularly for disinfection.