How to breed sea cucumbers?

1. shrimp pond culture mode: shrimp pond culture is suitable for small and medium-sized culture scale. It uses the existing shrimp ponds to throw stones and tiles, and artificially simulates sea reefs for sea cucumbers to inhabit, with the throwing density of 3,000-5,000 sea cucumber seedlings per mu.

Sea cucumber mainly feeds on algae and organic debris, and is fed with kelp, Undaria pinnatifida and other algae with bait when artificially fed. The water level in the shrimp pond should be kept at1.5-2m, but when it is high in summer and low in winter, the water level should be raised appropriately to ensure that the sea cucumber can spend the summer and overwinter safely, and the water quality management should be strengthened during the culture period.

2. raft culture mode at sea: choose the sea area with stable tidal current, no big waves and no pollution. Generally, mixed culture with abalone is adopted, and it is hung in the water layer with cages and plastic barrels, so the culture density is reasonable. Feeding bait is also an artificial mixture of bait and algae such as kelp. With the growth of sea cucumber, the culture density should be evacuated, and the cages should be inspected regularly to prevent absconding.

3. Submerged cage culture mode: choose an inland bend with little wind and waves, stable tidal current and no large amount of fresh water for culture, make a cage with steel bars, put stones and other things in it to simulate a sea reef, and then cover the cage with net clothes. The culture density is 200 seedlings per square meter, artificial bait and kelp algae are fed, the growth condition is checked regularly to determine the culture density, and the broken netting is checked and repaired in time.

4. Culture mode of rockfall in intertidal zone: The culture mode of rockfall in intertidal zone is to build a dam with reinforced cement according to the topographic characteristics, and the rockfall in the dam is used for nourishing ginseng. The dam height should be determined according to the tidal level, and drainage holes should be left at the dam site to facilitate natural drainage. The seedling density is about 5 cm per mu10000 when artificial bait and algae such as kelp are also fed.

5. Industrialized abalone polyculture mode: Industrialized abalone is a large-scale artificial breeding mode. Mixed culture with abalone in the factory workshop, according to the situation, stocking fry with the culture density less than 100 per square meter. Artificial means are used to simulate the growth environment of sea cucumber, such as lowering the water temperature in summer and raising the water temperature in winter, so that sea cucumber does not experience summer sleep and hibernation, shortening the growth cycle and improving profits.

Extended data:

Morphological characteristics of sea cucumber

The body is cylindrical, with a length of 10 ~ 20 cm, and the extra-large body can reach 30 cm. It is dark and full of thorns. Tentacle wheel, 17 ~ 30, generally 20. Touch and manual cans are well developed. Sea cucumber thrived on the earth earlier than primitive fish, and began to exist in Precambrian about 600 million years ago. It is the earliest living biological species and is called the living marine fossil. After several great disasters of the earth, they survived and witnessed several changes of the earth. The mouth is at the front end, mostly on the abdomen.

The anus is at the back end, mostly at the back. There are generally wart feet on the back and tube feet on the abdomen. The endoskeleton degenerates into tiny bone fragments. Many species have five rows of tube feet from mouth to anus. The anal orifice is also responsible for breathing and excreting waste. There are 10 or more retractable tentacles around the mouth, which are used for predation or burrowing. Many species can release their internal organs from the anus and then regenerate new ones, probably to escape from the enemy. The hidden fish of octopus is usually born in cloaca. Many of them can release toxins that are fatal to small animals, but they are not life-threatening.

References:

Baidu encyclopedia-sea cucumber

Baidu Encyclopedia-dry sea cucumber