Comprehensive collection of Australian freshwater lobster farming techniques (Part 2)

? (1) Construction of the cultivation tank The area of the cultivation tank is 2～6 square meters, and the height is ? (2) Water quality? ①Cultivation water. After the juvenile shrimps leave the mother body, the breeding tank must be inflated continuously throughout the day to ensure sufficient dissolved oxygen in the water. ? (4) Feed Most of the nutrients required by red crayfish adults are obtained from decaying organic matter, while most of the nutrients required by larvae are animal proteins, and they feed on various microorganisms. ? (5) Habitat The habitat is very important during the cultivation of juvenile shrimp. ? 3. Harvesting and transportation of shrimp seedlings ? (1) Juvenile shrimp fishing. When the juvenile shrimps are cultivated to about 3 centimeters, they should be caught in time and moved to adult shrimp ponds for cultivation. Use foam plastic boxes (80cm60cm20cm) to put 600 seedlings in each box, and put a small amount of water hyacinth and a small amount of water for transportation. The survival rate can reach more than 95%. ?? (4) Adult shrimp farming? Based on Australia’s breeding technical data and trial breeding practices introduced in Beijing, the main breeding methods and measures of Australian freshwater lobster into shrimp are now comprehensively introduced as follows: ? 1.Requirements for breeding ponds? The tire can be cut in half with a grinding saw to create an ideal habitat for freshwater lobsters, and the shrimp hiding in it can be smoothly poured out when fishing, reducing the handling of the shrimp. When releasing the seedlings, avoid too large a difference in water temperature. Before releasing the seedlings, slowly add a small amount of pond water into the seedling container to adjust the water temperature until the water temperature in the container is close to the pool water temperature, and then put the shrimp seedlings into the pool. ? 4. Strengthen feeding and management ? In daily management, in addition to regularly observing the feeding and activities, growth and shelling of Australian freshwater lobsters, we must also pay attention to changes in water quality and bottom environment. When the weather is too hot, in order to prevent extreme temperatures from occurring, the pool water can be deepened appropriately to stabilize the water temperature at the bottom of the pool. ? 1. Economic value? Due to the high meat yield of this shrimp, the meat is delicious and the meat content is 42%~? 2.Biological characteristics? (1) temperature The survival temperature range of red crayfish (5～35℃) is higher than that of Macrobrachium rosenbergii (? (2) The individual size of adult shrimp is usually 100～150g/. Although it is larger than Macrobrachium rosenbergii, it is larger than giant lobster (? (4) The seedling technology is easy to master. The seedling technology is not difficult and easy for farmers to accept. However, due to the restriction of the number of shrimp eggs, large-scale production is greatly restricted, and the seeds are expensive, which brings certain difficulties to the breeding promotion work. ? In short, the development of red crayfish farming must be market-oriented, benefit-oriented, and technology-guaranteed in order to have a broad prospect.