Current location - Recipe Complete Network - Diet recipes - What are the precautions for raising crayfish?
What are the precautions for raising crayfish?
Pay attention to the pond conditions. The pond for crayfish culture should not be too deep, generally not more than 1.5 meters, and the ridge of the pond should have a certain slope, which is conducive to creating a water environment with different depths and temperatures, making full use of light energy, raising the water temperature and promoting the growth of crayfish. Crayfish has a strong ability to dig holes and escape. The ridge of the pond should be compacted and rammed firmly, and there should be no caves, and the width should be more than 1.5 meters. The surrounding areas should be surrounded by asbestos tiles and other escape prevention facilities, especially the water inlet and outlet should be equipped with double-layer filters to prevent the cultured shrimp from escaping. The newly opened pond should also be covered with a layer of 60-80 mesh polyethylene mesh around the slope or in the middle of the pond ridge. Pay attention to planting aquatic plants. Many ponds for crayfish breeding are transformed from fishing ponds, and there are no aquatic plants. In fact, crayfish need aquatic plants just like shrimps and river crabs. One of the reasons for the failure of some farmers is that they have not planted aquatic plants. Aquatic plants can not only provide hidden places for crayfish to inhabit and shell, but also purify water quality, increase dissolved oxygen, and provide fresh natural plant bait for crayfish, the biggest benefit of which is to reduce crayfish killing each other. The main species of aquatic plants are hydrilla verticillata, Elodea nuttallii, Sophora alopecuroides and Alternanthera philoxeroides, accounting for 20% to 30% of the culture area.

Pay attention to feed. Crayfish is omnivorous, likes to eat animal bait, and is gluttonous and eats a lot, and the lack of bait is easy to cause cannibalism. At present, the internal organs of chickens, ducks, pigs and other livestock and poultry are cheap, and some farmers feed the internal organs of livestock and poultry as a whole, but they don't beat them evenly, which leads to crayfish fighting with each other when eating, and the water body turns black and stinks, which is easy to cause diseases and cause some farmers to fail in breeding. It is necessary to adhere to the combination of fine and green, and flexibly grasp the feeding amount according to the feeding situation.