Detailed Explanation of Five Key Points for River Crab Farming in October

In October, river crab farming enters its late stage, so farming management should be strengthened to ensure the river crabs are fattened and grow well.

1. Strengthen daily management

Persist in patrolling the pond 3 times a day, once each in the morning, noon, and evening, mainly to observe the dynamics of the river crabs in the pond. During the morning patrol, observe whether the river crabs have come ashore and whether there is oxygen deficiency; during the noon patrol, observe the water quality and measure the water temperature in the crab pond; during the evening patrol, mainly check the activity and feeding conditions of the river crabs, especially in the high-temperature season, frequently patrol the pond to observe whether the river crabs show oxygen deficiency, death, disease, ciliates, and so on.

2. Strengthen aquatic plant management

Strengthen management of the aquatic plants in the pond, cut the grass at the proper time, maintain reasonable density and distribution, ensure appropriate coverage, and keep the water flow unobstructed. If aquatic plants are found to be rotting or floating, they should be removed in time. If the aquatic plants have silt, change the water to remove the dirt, keep the water quality fresh, and create a good pond environment.

3. Add and change water at the proper time to regulate water quality

Maintain an appropriate water volume, add water once every 10-15 days, change the water once a week, change 30 cm each time, and frequently splash biological preparations to regulate water quality, so that the river crabs have a good living environment.

4. Persist in scientific feeding

According to the weather, water temperature, season, water quality, and the growth and feeding conditions of the river crabs, flexibly control the feeding amount. When feeding, adhere to the principle of “four fixed and four look” so that the river crabs eat enough and eat well, and are fattened and gain weight.

5. Disease prevention and control

Adhere to the principle of giving priority to prevention and combining prevention with control, splash quicklime once every 15-20 days to prevent disease, use “Xianchongjing” to kill ciliates once, and the next day use chlorine dioxide to disinfect once. For diseases that appear, use appropriate drugs for treatment. If ciliates are found, use “Xianchongjing” for treatment. If diseases such as black gills, rotten gills, and liver necrosis are found, use iodine preparations for splash treatment.