1 clear wild fish, reduce the competitors Wild fish in the pool, miscellaneous shrimp is more, will compete with the South American white shrimp for bait, and even residual white shrimp, low quality fish and shrimp competing for food feed, will reduce the utilization of feed, and therefore should pay attention to its removal, the method is to release the seedling into the water before the water 20-30 cm per mu with quicklime 150 kilograms of slurry sprinkled throughout the pond to thoroughly disinfect the pond, kill the pool cattle wild fish. Into the water with a filter bag to prevent wild fish with the water into the pool. 2 Note that the choice of feed and supplementation 2.1 To choose the regular manufacturers of South American white shrimp special feed, feed formula is reasonable, can ensure rapid growth of shrimp, to avoid waste of feed. Do not use other shrimp feed to replace. 2.2 Pre-breeding, pay attention to fertilization, cultivate a beneficial shrimp growth of biological communities, such as benthic organisms, plankton. And can be transplanted to the pool of some beneficial bait organisms, so that less bait or no bait, with the consumption of basic bait, you can feed some pathogen-free fresh bait and young shrimp with special feed, and then gradually transition to feeding the South American white shrimp special feed, so that part of the feed can be saved. 2.3 Breeding late, when the shrimp disease outbreaks after the period, feeding fresh feed has not caused a large number of shrimp disease, according to the local feed sources can feed some fresh bait to save bait costs. But note that the feed must be fresh, not spoiled. 3 Keep the water fresh shrimp first raise water, water quality affects the shrimp color, growth and bait coefficient. South American white shrimp like fresh water, water quality, shrimp growth, disease, can make full use of bait, reduce the bait coefficient, and thus the breeding of white shrimp should pay attention to the regulation of water quality, keep the water quality fresh. The general requirements of the water was yellow-green, transparency 30-40 cm, dissolved oxygen 4 mg / liter or more for good. Commonly used water quality control methods are: ① diligent water change, - generally 7-10 days to change the water once, each time to change 10% -20%; ② regular sprinkling of quicklime, once every 10-15 days, the concentration of 15 grams / meter 3; ③Install an oxygenator and regulate with an oxygenator. ④ Use biological agents, such as photosynthetic bacteria, to regulate water quality. 4 grasp the baiting techniques 4.1 a small number of times: according to the shrimp feeding habits and growth characteristics, to adhere to the principle of a small number of times, and the amount of feeding at different times is not the same, generally 7:00 cast 30% of the daily feeding, 11:00 cast 10%, 18:00 cast 40%, 23:00 cast 20%. 4.2 Master the appropriate amount of feeding: the amount of bait is more difficult to grasp, too much feed waste, too little shrimp are not full, not conducive to growth. A more practical approach is to set up bait table, set up along the pool around several 1.0 meters 2 or so of the bait table, feeding along the pool evenly sprinkled, feeding 1.5-2 hours after checking the shrimp feeding situation, under normal circumstances, if the rate of satiated stomach accounted for 60% -70%, it is reasonable to feed, satiated stomach is too high is to reduce the amount of feeding, too low is to increase the amount of feeding. 4.3 According to the weather conditions feeding: sunny weather, wind and warm when feeding; bad weather, rainy, hot weather or cold spells when feeding or not feeding. 4.4 According to the shrimp feeding: according to the growth of shrimp and the presence or absence of disease flexibility to grasp the amount of feeding. Shrimp growth, no disease when appropriate feeding, and vice versa, less feeding; shrimp a lot of moulting less feeding, moulting a day after more feeding. 4.5 According to the water temperature feeding: water temperature below 18 ℃ or higher than 32 ~ C less feeding, 25-30 ℃ more feeding. 4.6 According to the water quality feeding: water quality is fresh, dissolved oxygen is sufficient when the shrimp feeding strong, can be normal feeding; while the water quality is poor, dissolved oxygen is low, less feeding or not feeding.