CATDOLL : CATDOLL: How to farm river shrimp

1. Shrimp pond treatment. River shrimps have relatively high requirements for water quality and are required to be far away from industrial wastewater pollution sources. Shrimp ponds are best built in locations with good lighting. A shrimp pond is about 3 mu wide and 2 meters deep. The bottom is sandy and less silt. A 2.5 cm dense net should be laid at the inlet and outlet to prevent escape and prevent wild fish and people from invading the pond. After selecting the location and specifications, the shrimp pond should be disinfected. It is recommended to apply 75-100 kg of quicklime per mu for disinfection half a month before stocking.

2. Bait preparation: one week before stocking the shrimp fry, filter with a 60-80 mesh silk screen, let in 30 cm of water, apply 50 kg of base fertilizer (fermented animal manure) or 5 kg of urea per mu to cultivate basic bait. Make sure the transparency of the pond water is kept at around 30 cm.

3. Shrimp fry stocking: After the preliminary work is ready, you can stock the shrimp fry. The most important thing about stocking is density control. Generally speaking, taking a pond with a water depth of 2 meters as an example, assuming that the planned output is to reach 80 kilograms, it is recommended to stock 80,000 to 85,000 shrimp fry per mu. Of course, if the pond conditions are good and equipped with an aerator, the stocking density can be appropriately increased.

4. Feeding. Fresh shrimps have a mixed diet. If they are raised artificially, it is best to feed them with complete crushed granular feed within one month after the shrimp fry are put into the pond. In the first half of the month, feed 0.5-1.0 kg of Biqiao per mu every day, and 1.5-2.0 kg in the second half of the month. Feed at 7-8 am and 5-6 pm. The feeding ratio in the morning is about 35% of the total daily feeding amount, and in the afternoon it is 65%. When feeding, it should be evenly scattered around the edge of the pond, and only a small amount is needed in the middle of the pond.

5. Daily management: Change the water by 20-30 cm every 2-3 days in the hot season. Every half a month or so, use 5-10 kg of quicklime per mu to make a slurry and sprinkle it all over the pond, which can not only improve the water quality and bottom quality, but also sterilize and promote molting and growth. From August to October, the amount of fresh shrimp in the pond increases sharply, and it is also a season with changeable climate, which is prone to hypoxia and floating heads. It is necessary to strengthen pond inspections, add water in time or start oxygenation. After stopping feeding in winter, it is necessary to add water regularly and apply fertilizer in appropriate amounts, and control the water quality and water level to reduce the occurrence of moss and black-shelled shrimp.