Shrimp fry pre-growth mainly rely on natural bait in the pool to maintain, in the middle and late feeding to artificial pellet bait, whether homemade or purchased bait, its protein content should be higher than the Chinese shrimp with bait, preferably more than 50%, in order to ensure that the Japanese shrimp normal growth. Baiting time should be at night, to 8:00 p.m. and 1:00 a.m. each night is the best. In general, you can cast 70% of the daily bait at 8 p.m. and 30% in the early morning.

Pre-culture can be used in small hanging nets, in the middle and late available spinning net quantitative method to determine the total weight of shrimp in the pool, and then determine the daily baiting. In general, shrimp weight 1 gram to 5 grams when the baiting amount of 7% to 10% of the body weight; 5 grams of 10 grams of 4% to 7%; 10 grams to 20 grams of 3% to 4%. Daily observation is the basic work in the process of raising Japanese shrimp, should focus on the following aspects of work:

1) shrimp feeding: feeding situation reflects whether the bait is appropriate, the substrate and water quality is normal, will directly affect the growth and health of shrimp.

(2) the growth of shrimp: the observation of the growth of the main survival rate and average weight estimation, weight measurement and moulting.

(3) shrimp activity: according to the Japanese shrimp habits to observe its activities, found abnormalities, such as shrimp do not dive sand, decreased activity, slow response, floating head or spinning at the surface, etc., should take timely measures to deal with.

(4) shrimp pond substrate and water quality: including pond bottom color and odor, water quality indicators and daily testing. Japanese shrimp in the mid to late stage of cultivation, every 10 days to 15 days with quicklime water splashing the whole pool 1 time, to improve the physical and chemical factors of the pool water. Prevention of disease, lime dosage of 15ppm ~ 20ppm. add hygromycin in the bait made of bait, can prevent bacterial disease, add the amount of bait is generally 1 ‰. In recent years, in the process of raising Japanese shrimp viral white spot disease also occurs from time to time, there is still a lack of effective treatment for viral diseases, can only be slowed down by means of prevention occurs, such as feeding high-quality bait, to enhance the shrimp's physical fitness, add vitamin C, vitamin E, ginseng saponin and other immune-enhancing substances in the bait to enhance the shrimp's immune ability.