Pond conditions 3-5 acres of land surface is appropriate, the bottom with sand or hard soil as well. The pool wall may have a suitable slope, the bottom of the pool must have certain aquatic plants, have good water intake and drainage facilities, can discharge irrigation, and a net cover must be installed at the inlet and outlet. Shrimp ponds should be changed frequently, changing the water volume from 1/5 to 1/3 each time to facilitate the shelling and growth of shrimp. Around the pond, bamboo and plastic are used to stop the escape wall with a height of 30 cm. There must be enough concealed objects in the pond, such as old bricks, tiles, mesh, old tires, bamboo rafts and other artificial nests, but also water lilies.
Water quality conditions range from 9 to 36 degrees. The optimum temperature is 20-33 degrees; below 12 degrees, the growth stops, and below 10 degrees, the food intake stops. pH 7-8, dissolved oxygen> 4mg/L, water quality to prevent industrial pollution and pesticide pollution. The hardness of water is better than 50ppm.
The larvae with a density of 2 cm long were stocked with 6,000-8,000 tails per acre, and 3 cm long with a stock of 4000-6,000 tails per acre. Polyculture can put 2000-3000 prawns per acre. In addition, about 50 grams of flowers are stocked per acre, 300 to 400 white storks, and 200 grass carp. Avoid polyculture with carnivorous fish.
Feeding techniques There are fresh small fish, snails, soybeans, shrimp feed, bean cakes, peanut cakes, vegetables, and low-value shellfish. The species should be changed frequently, and the number of feedings per day should be 2-3 times for shrimps and 1-2 times for shrimps, and the amount of feed should be 5%-15% of the body weight of shrimps in storage. The amount of feed should be based on water temperature, water quality, and feeding conditions. Increase or decrease, the amount of feed at night to account for about 70% of the day.
The daily management should always be based on the patrol pond and find an abnormal phenomenon. It should be dealt with in a timely manner while paying attention to the prevention of enemy harm and pesticide poisoning.
Prior to the disease prevention and treatment of the lower pond, surface disinfection can be performed to prevent the introduction of pathogens (parasites, algae and certain bacteria) into the pool. At the same time to add a variety of vitamins in the bait of shrimp, enhance shrimp immunity, to manage water quality, pay attention to water disinfection, control of pathogenic outbreaks.
After catching freshwater lobster for 120-150 days, use nets or net cages to catch fish by catching large and small ones. If caught in a round, the density of stocking can be appropriately increased; depending on local temperature conditions, the water-dried ponds can be captured in the market from November to December.
Overwintering when the water temperature is lower than 10-11 degrees, the shrimp can be captured, in the climate conditions in Hainan, the pool water can be deepened, wintering in the open air. Transport and market live shrimp transportation is convenient, as long as the pad to put some water, to maintain a certain humidity can be transported, transport should pay attention to ventilation, do not squeeze; transport time is too long, halfway to watering to ensure the listing of large live shrimp, Improve the economic benefits of breeding.
Australian freshwater lobster, also known as red prawn, is a large species of tropical shrimp. Its wide adaptability, as long as the water temperature is maintained within its suitable temperature range, can be raised all year round. It can be cultured in ponds, lakes, reservoirs and rivers. At present, earthen pond farming is commonly used.