Crayfish are omnivores. Under natural conditions, they mainly eat organic debris, epiphytic algae, filamentous algae, roots, leaves and debris of aquatic plants, and especially like green plants with rich juice, such as water hyacinth, water hyacinth, POTAMOGETON malayi, green duckweed and bitter grass.
Animal foods include water worms, earthworms, eggs from aquatic insects, pupae, snails, mussels and fish. Such as by-products of artificial breeding, compound feed and agricultural and sideline products processing (cake, rice bran, bran, etc. ), leftovers from slaughterhouses, and all kinds of tender grass, fruits and vegetables. Yes, hello.
Expansion: Feed feeding of crayfish.
Lobsters mainly eat at night, so they feed 70 ~ 80% of the bait all day at night. Bait should be thrown into shallow water near the pond, and the well should be timed, fixed, quantitative and qualitative. Each pond can be equipped with 2 ~ 4 bait observation stations to observe whether the bait is used up every morning to determine the amount of bait cast that day. Too little bait will inhibit the growth of lobsters or kill each other because of hunger. Too much bait will not only increase the cost, but also worsen the pond environment. It is not good for the growth and molting of lobsters. The bait can be common prawn bait or lobster special bait. According to the general experience, the amount of bait cast throughout the day should be based on eating, eating and leaving no residual bait. Generally, shrimps are fed at 20-25% of their body weight, middle shrimps are fed at 1 5-20% of their body weight, and prawns are fed at10-0/5% of their body weight, twice a day,1time in the morning and evening.
Extension: What feed does crayfish feed?
1. juvenile shrimp feed: the crude protein content of juvenile shrimp feed is 37.4%, and the proportion of various raw materials is Peruvian fish meal 20%, fermented blood meal 13%, bean cake 22%, cottonseed cake 15% and secondary meal11.
2. Adult shrimp feed: The crude protein content of adult shrimp feed is 30. 1%, and the proportion is Peruvian fish meal 5%, fermented blood meal 10%, bean cake 30%, cottonseed cake 10%, secondary meal 25%, corn meal 10%.
Note: crayfish like to eat plankton. Although garbage such as heavy metals and oil stains are not the feeding objects of crayfish, they can adhere to food and enter crayfish. If you live in water polluted by heavy metal ions, the "poison" in crayfish is difficult to excrete.
Today's sharing is over. I hope I can help you.