Key points of giant river prawn farming technology
Giant river prawn, also known as Malaysian prawns, is a popular freshwater shrimp species. Its meat is delicious and nutritious, so it is widely popular with consumers. With the growing market demand, the farming industry of giant river prawn is gradually emerging. In order to ensure the success of farming and obtain good economic benefits, farmers need to master certain technical points. This article will introduce in detail the key points of giant river prawn farming technology to help farmers better carry out farming.
First, the breeding environment.
Pond selection: Choose a place with flat terrain, sufficient water source, good water quality and convenient transportation to build a pond. The area of the pond is generally 2-5 acres, and the water depth is 15-2 meters, the bottom of the pool is flat and slightly inclined towards the drain.
Pond cleaning: Before stocking, the pond water should be drained and the bottom of the pond should be exposed. Then remove the excess silt and trim the ridges. Finally, it is disinfected with quicklime, with a dosage of 100 kg per mu.
Facilities: Sunscreen is erected above the pond to protect it from direct sunlight and heavy rain. Set up food tables and aerators around the pond.
Second, breeding management.
Seedling selection: choose seedlings with strong physique, neat specifications, and no disease and no injury. Introduce shrimp fry from regular nurseries to avoid inbreeding.
Stocking density: Stocking density is determined according to pond conditions and the level of breeding technology. Generally speaking, 3-50,000 shrimp seedlings are stocked per mu.
Feed feeding: Giant river prawn has relatively high requirements for feed and needs nutritionally balanced food. According to the growth stage and feeding habits of shrimp, the roughage and concentrate are reasonably matched to ensure that the shrimp has sufficient feeding. At the same time, it is necessary to follow the principle of "four determinations", that is, timing, positioning, qualitative and quantitative feeding.
Water quality management: Keeping water fresh is the key to successful farming. It is necessary to inject water regularly, generally every 7-10 days, 20-30 cm each time. At the same time, it is necessary to use the aerator rationally to keep the dissolved oxygen in the water above 4 milliliters. Regularly test the water quality and adjust the pH value and ammonia nitrogen and other indicators.
Daily management: Patrol the pond once a day in the morning and evening to observe the changes in water quality, shrimp activities and feeding. Remove sick and dead shrimp and sundries in time to maintain the environmental hygiene of the pond. Keep a good record of the breeding, including the amount of feeding, water change, weather changes, etc., so as to summarize the lessons learned.
Disease control: Giant river prawn is susceptible to bacterial and parasitic diseases, so control is very important. Antimicrobials and pesticides should be used regularly for prophylaxis and**. At the same time, it is necessary to establish a sound quarantine and isolation system to prevent the spread of diseases.
Fishing and transportation: Harvest at the right time according to market demand and shrimp growth. Before fishing, it is necessary to stop eating for a day, and use shrimp pots, ground cages and other tools when fishing, and try to avoid mechanical damage and mutual squeezing. When transporting, use a refrigerated truck or add ice cubes to keep the temperature of the shrimp body above 10 to prevent diseases.
In short, giant river prawn farming needs to comprehensively consider many factors such as environment, seed, feed, and management. Only by mastering the key points of breeding technology can we improve the success rate of breeding and obtain good economic and social benefits. At the same time, it is necessary to pay attention to environmental protection and food safety issues to achieve sustainable development.
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