The following steps can be taken to ensure the feeding of crayfish:
1. Preparation of aquaculture environment: Choose water bodies with fresh water quality, no pollution, high dissolved oxygen content, and pH values between 7.0-8.0. The pond should be located in a well ventilated and sunny area, with a quiet environment, convenient drainage and irrigation, and pollution-free water quality. The area is generally 3 to 5 acres, and the water depth should be between 0.8 to 1.5 meters. The bottom of the pond should be hard soil or sandy, without silt. The pond must have a good drainage and irrigation system, with one end receiving water from the upper part and the other end receiving water from the bottom. Both the inlet and outlet should be equipped with anti enemy and anti escape nets. The width of the pond embankment should be at least 1.5 meters, and anti escape walls or boards with a height of 0.5 meters and smooth inner walls should be installed around the pond embankment. Build a mud embankment in the middle of the pond to provide a habitat for crayfish to burrow. The two ends of the embankment are not connected to the pond embankment, and the length of the embankment is about 4/5 of the pond length, with a width of over 1 meter and a height of 5-10 centimeters above the water surface. 30% of the pond area is planted with aquatic plants such as bitter grass and black algae, which facilitate the escape and habitat of crayfish during molting.
2. Seed selection and stocking: Choose healthy, disease-free, and energetic seedlings, such as 3-4 cm juvenile shrimps or 5-7 g parent shrimps. The placement of seedlings should avoid the extreme temperature seasons of summer and winter. The best seedling placement plan is to release shrimp seedlings from September to October and shrimp seedlings from June to August. The planting density should be controlled at 80-100 pounds per acre, and the mixed breeding mode has a lower density, controlled at 50-60 pounds per acre. Try to choose local procurement for seedlings, avoid long-distance transportation, and take measures to prevent wind, dehydration, and low temperature transportation during transportation. Disinfect the shrimp fry with saline solution before release to eliminate parasites and bacteria on their bodies.
3. Daily management and maintenance: Water quality management: Regularly replace water bodies to maintain fresh and stable water quality, add beneficial microorganisms and biological filter materials such as aquatic plants, and control indicators such as pH value and ammonia nitrogen content of water bodies. Feed feeding: Crayfish are omnivorous animals that require high-quality feed such as fish meal, soybean meal, corn, etc., while regularly adding nutrients such as vitamins and minerals. Feeding should be done at a fixed point, time, and quantity, with a variety of types as much as possible. Feeding should be done once a day in the morning and once in the evening, and the bait should be placed at the shallow edge of the pond. Disease prevention and control: Regularly observe the growth of crayfish, detect and treat diseases in a timely manner, disinfect and regulate the water quality of aquaculture water regularly, and prevent the occurrence of diseases. Fishing and listing: When the crayfish reach a certain specification, they can be caught and listed, taking care to avoid causing harm to the crayfish and maintain the stability and health of the water body.
By following the above steps, it is possible to ensure a good growth environment and conditions for crayfish during the breeding process, thereby improving the survival rate and economic benefits of breeding.