1. Wide tolerance to salinity Penaeus vannamei can adapt to a salinity of 0.5-50 and an optimal salinity of 15-35. After desalination, shrimp can still be bred in freshwater ponds. 2. Wide range of temperature resistance The temperature of white prawns in South America can be 12-43.5 degrees, but the growth is most suitable for water temperatures of 25-32 degrees. 3. It is not only adaptable to low-density culture but also adapted to high-density culture for high-density culture. For example, factory-cultivated 400 shrimps per square meter, and the survival rate reaches 82%. 4, rapid growth in the water temperature of 25-33 degrees, after 70-80 days up to weight 15-20 grams, the fastest 58 days weighing 16.6 grams. 5. The lowest coefficient of feed utilization rate is 0.8, the majority is 1.1-1.3, and the highest is 1.5. This may be related to the fact that there is little activity, and the proportion of nutrient intake used for growth is high. 6, strong disease resistance White spot virus has a certain resistance to disease, and China's shrimp, Penaeus prawn were raised in a pond, the Chinese shrimp died, the white shrimp survival most. 7. Strong resistance to dryness Penaeus vannamei can dry for at least 1 hour under wet conditions to facilitate the sale of live shrimp. 8, broodstock easy maintenance South American white shrimp can be mature after 9 months of breeding, and mating and production under artificial breeding conditions, to facilitate the solution of broodstock problems and artificial selection of seedlings. The disadvantages are the poor ability to withstand low temperature, when the water temperature is long below 18 degrees, the shrimp is in a state of mooring, the feeding is decreased, the disease resistance is poor, and the vitiligo virus is often prone to eruption. Therefore, it is not possible to plant the seedling prematurely or harvest too late. . Followed by fear of alarm, especially in the high-temperature period after the death of frightened. Third, broodstock spawning is not concentrated and it is not easy to obtain a large number of spermatozoa in the north.
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