CATDOLL : CATDOLL: What are the techniques for mixed breeding of crabs and shrimps?

1. Pond conditions. Before breeding, we must first prepare the pond. The area of ​​the pond should be reasonably controlled according to the number of breeding, generally maintained at about 4-7 acres. There must be sufficient water around the pond, and the water quality must be clean enough and not polluted. After selecting the pond, use quicklime or bleaching powder to disinfect the entire pond. Then equip aerators, water pumps and other fishery breeding facilities. Pay attention to the anti-escape measures at the inlet and outlet of the pond to prevent shrimps and crabs from escaping.

2. Throw in snails and plant grass. In winter every year, plant an appropriate amount of aquatic plants in the pond. The planting area of ​​aquatic plants must be controlled and maintained at about 65% of the pond area. Proper planting of aquatic plants can provide a place for shrimps and crabs to live in the sun, avoid photosynthesis of aquatic plants, and increase the dissolved oxygen content in the pond water. Then, put about 350kg of fully disinfected snails in each acre of pond to provide shrimps and crabs with sufficient natural bait and reduce the cost of feed breeding.

3. Seedlings release. The release time of shrimps and crabs is different, and it is not advisable to release them at the same time. Shrimp should be released early, around December to February, and about 200 kg per mu of pond should be released, that is, 20,000. Then, after the shrimp seeds are released, crab seeds should be released around March. The size of crab seeds should be controlled at 130-150/kg, and the number released should be kept at around 650. If green shrimps are released in July, the release size should be 15,000/kg, and about 4 kg should be released. All seedlings must be thoroughly disinfected before release.

4. Daily management. We should reasonably master the feeding time and feeding amount according to various factors such as weather, climate, water quality, and feeding conditions. Then change the water regularly and disinfect it to ensure the water quality. The transparency of the pool water should be maintained at about 35 cm. The pond should be patrolled at least twice a day. The main contents of the patrol are water quality, water color, feeding, shelling, etc. Check the feeding table in time. If there is any residual bait, it should be removed in time to avoid polluting the water quality and causing shrimps and crabs to become sick. Strengthen management, do a good job in basic work such as feeding and water quality, and ensure the normal growth of shrimps and crabs.