1, pond conditions. Pond water surface should not be too large, suitable for water surface of 1 to 2 acres, water depth of 1 to 1.5 meters, with a perfect drainage into the water system and oxygenation system; pond bottom slightly sloped, no seepage, and fix the anti-escape facilities.
2, shrimp fry stocking. Lime water disinfection to be 7 to 10 days after the normal water quality can be released, the water temperature requirements are relatively high, the appropriate growth of water temperature 20 ℃ ~ 30 ℃, below 15 ℃ when few feeding.
3, crawfish feed feeding.
Lobster feeding mainly at night, so the night feeding 70 to 80% of the full day bait. Bait to be cast in shallow water around the pool, well do regular, fixed point, quantitative and qualitative, each pond can be set up 2 to 4 bait observation platform, every morning to observe whether the bait is eaten to decide the amount of bait for the day, baiting too little will inhibit the growth of the lobster or due to starvation and kill each other, too much both increase the cost and will cause the deterioration of the pond environment. Lobster growth and molt is not favorable. Bait can be used general shrimp bait or lobster special bait. According to general experience, the amount of bait throughout the day should be mastered to eat full, eat up, no residual bait shall prevail. General small shrimp at 20 to 25% of body weight, medium shrimp at 15 to 20% of body weight, large shrimp at 10 to 15% of body weight baiting, feeding 2 times a day, morning and evening, 1 time.
4, crayfish breeding feed.
(1) baby shrimp feed: baby shrimp feed crude protein content of 37.4%, a variety of raw materials ratios of Peruvian fishmeal 20%, 13% of fermented blood meal, 22% of soybean cake, cotton kernel cake 15%, 11% of the second meal, corn flour 9.6%, bone meal 3%, yeast 2%, a variety of vitamin premixes 1.3%, ecdysone 0.1%, starch 3%.
(2) adult shrimp feed: adult shrimp feed crude protein content of 30.1%, the ratio of Peruvian fishmeal 5%, fermented blood meal 10%, 30% soybean cake, cotton kernel cake 10%, 25% of the second meal, 10% corn flour, bone meal 5%, yeast 2%, a variety of vitamins premixed 1.3%, ecdysone 0.1%, starch 1.6%.
Note: crayfish like to eat plankton, heavy metals, oil and other garbage, although not the crayfish feeding object, but can be attached to the food into the crayfish body. If the heavy metal ions contaminated water life, crayfish in the body of the "poison" is difficult to excrete.
5, disease prevention and control:
Black gill disease: in the persistent rain or strong rainstorms, due to shallow pond water is easy to turbidity, water pollution, insufficient light mycobacterial infections, etc., some crayfish gills from the beginning of the red to brown, until completely black, the gills gradually lose the filtering of water to give the function of oxygen, and slowly gills atrophied.
Prevention methods: 1 gram per cubic meter of water with bleaching powder whole pool splashing, or 0.6 grams per cubic meter of water with ozone composite preparation whole pool splashing, applying medicine 2 times a day. Every cubic meter of water after every 3 days with photosynthetic bacteria 5 grams of whole-pool splashing; feed added 0.2% stabilized VC, continuous feeding for a week can be.