1, pond conditions
Covering an area of 2-3 mu, the bottom is muddy and the water depth is about 2 meters. The water inlet is filtered with a 60-mesh screen. Leave 50 cm of water before sowing, clean the pond with quicklime 1 10 kg/mu and tea residue 32 kg/mu, and install 1.5 kW impeller aerator.
2, fried stockings
Stocking completely desalinated shrimps about 2. 1 cm long, and paying attention to using completely desalinated shrimps. A few days before buying, it is best to go to the nursery to observe the desalination situation in order to buy safe seedlings. The day before stocking, turn on the aerator for aeration, and put a small amount of water before a large number of seedlings enter the pool. The stocking amount is 40 fish /m2. After the shrimp fry are stocked 1 month, 30-40 silver carp and bighead carp are put in, each with 0.25 kg.
3. Breeding management
Feed: Feed should be fed according to the principle of "fixed-time quantitative, fixed-point qualitative, small-amount and multi-input, and specific adjustment". Set 3 ~ 4 food tables in the pond and put them 4 times a day after half a month. The daily feeding amount is 5 eggs, 0.2 kg peanut bran, 0.75 kg small fish and 0.3 kg shrimp feed per 10,000 shrimp seedlings.
Water quality: Although the shrimps are desalinated, they still have the habit of seawater. Before planting seedlings, add 50ppm of raw salt into the pond, and then add raw salt as appropriate. Keep the water level 50 cm within one week after the shrimp fry are stocked, and then increase it by 5 cm every day until the water depth reaches about 160 cm. Change 20% water every 4-5 days, and apply 10- 15 ppm quicklime every 4-5 days.
Penaeus vannamei
Penaeus vannamei is an animal belonging to Penaeidae, mainly distributed in tropical waters along the Pacific coast of the western United States, from the Gulf of Mexico to central Peru and near Ecuador. The natural habitat of Penaeus vannamei is muddy seabed, which belongs to omnivorous species. Its adult body length can reach 23 cm, its shell is thin, its normal body color is light blue or light blue-gray, and its whole body has no stripes.