How to breed crayfish to grow fast and big 1, the method of fertilization and watering
If crayfish want to grow fast and big, it is necessary to drain the water in the pond before sowing, expose it to the sun, eliminate the germs and eggs in the sludge, and then scatter the rotten chicken and duck feces into the pond to make the pond more fertile, which is conducive to the reproduction of microorganisms and accelerate the growth of crayfish.
2. Feeding management
Crayfish are omnivores. When raising crayfish, you need to feed them twice a day, at 7 am and 7 pm, and the feeding amount in the afternoon should reach 70% of the whole day. Moreover, when feeding crayfish, it is necessary to provide it with food such as soybeans, shrimp, algae and corn.
Step 3 supplement calcium
Crayfish is a crustacean, and it will go through several times of shelling. When cultivating crayfish, it is necessary to add bone meal, fish meal and eggshell powder to supplement calcium for crayfish, add shelling elements to feed to help crayfish shell, or sprinkle quicklime once a month to increase calcium content.
Step 4 plant aquatic plants
When raising crayfish, aquatic plants should be planted in the pond. Submerged plants such as black algae, Sophora alopecuroides and Ceratophyllum can be selected, so that the water surface coverage rate can reach 30%, which is beneficial for crayfish to hide and eat. A fence should be built around the pond to prevent crayfish from escaping.