1, Tangkou
Before crayfish breeding, the first thing to prepare is to choose a pond mouth, and you must choose an area without pollution sources, and also ensure the convenience of water storage and drainage.
2. Disinfect fertilizer and water
After selecting the pond mouth for crayfish breeding, it is necessary to disinfect and clean the pond mouth first. Only thorough disinfection can eliminate the bacteria harmful to crayfish, and some aquatic plants and plankton should be planted before putting crayfish into the pond.
3, prevent escape
Crayfish can crawl around like crabs, especially the two pincers in front of crayfish are more convenient to escape. Therefore, before breeding, it is necessary to do a good job of preventing escape, and the pond will be surrounded by the internet, and the width of the pond will be widened, because crayfish can not only climb high to escape, but also have the habit of making holes.
4. Choose shrimp seedlings
After all the above work is done, shrimp seedlings are selected and released. Generally, crayfish varieties with high survival rate and strong reproductive ability should be selected, and the density of crayfish should not be too large, otherwise the water quality will deteriorate.
5, pond water temperature
The growth water temperature of crayfish is above 10, the suitable water temperature is 16-33, and the optimal water temperature is 20-32. However, when the temperature is lower than 20 or higher than 32, the growth rate of crayfish will decrease, and adult shrimps have a certain tolerance to high and low temperatures. Crawfish will still crawl out of the cave for food all winter, but when the water temperature is lower than/kloc-0.