There are more than 60 kinds of sea cucumbers in China's coastal areas, and more than 20 species are available for consumption. Among them, sea cucumber, black cucumber, black ginseng and plum ginseng have delicious taste and high nutritional value. They are valuable seafood products. The artificial breeding techniques of sea cucumber are introduced as follows:
First, the living habits of sea cucumber: Sea cucumber is a narrow-salty animal, living in the open tide, clear water, no large amount of freshwater into the bottom of the reef or sand bottom. The living area is rich in benthic diatoms and macroalgae. Young individuals mostly live under the base of large leafy algae and under reefs and gravels, and adult individuals gradually move to deep water areas, that is, in the depth of water of 8 to 20 meters.
Stichopus japonicus uses tentacle scans, benthic diatoms, seaweed chips, bacteria, microscopic animals, organic debris, etc. in the surface layer of the bottom sediment. These substances are taken together with sediments. Its food intake is quite large. The intensity of food intake was seasonal, with the highest intake in March and the lowest in mid-August. When the water temperature reaches 20 °C ~ 24 °C, it is necessary to carry out "summer sleep." In China's Yellow Sea and Bohai Sea, the "summer sleep" period is about 100 days. When it is stimulated by harsh conditions or turbid conditions such as water quality, all organs will be excreted from the anus. In accordance with this, the regeneration ability is very strong. When the conditions are appropriate, the lost organs and the cut off body segments can be regenerated to become a complete individual.
Second, the artificial cultivation of sea cucumber: To do a good job of artificial breeding of sea cucumber is to solve the large-size seed. Therefore, juveniles 1 to 1.5 cm in length that were bred in that year must be "bred in the middle" at sea or indoors to make them 3 cm. For the “middle breeding†without predication, the site must be selected so that the organic matter and floating mud can easily enter and sink in the inner bottom of the mud in the breeding cage. The bay should have more organic suspended matter and less wind and waves. condition. The bred facility is a modified cage intermediate breeding cage with a metal frame specification of 60×60×30 cm and a cage with an outer envelope covering it. The mesh should be selected according to the size of the caged seedlings, and a black corrugated plate is laid inside the cage. The test showed that the number of seedlings per cage should not exceed 400 heads. After 3 to 3.5 months, the body length can reach 3 cm or more and the survival rate is 82% to 100%. The survival rate depends mainly on the equipment used, the stress or the mechanical injury of the seedlings and the escape from the mesh.
It grows rapidly from October to the end of November, and then grows slower as the water temperature drops. From the beginning of February, the growth rate increases again as the water temperature rises. The bigger the seedling grows faster. In the breeding process, if the seedlings are bred and bred, they will grow neatly and quickly. It is better to feed goose palm dishes and other brown algae. After more than 4 months of breeding, about 25% of the body length is above 10 cm.
Third, the use of shrimp pond mixed sea cucumber stichopus key technologies:
1. Put non-standard stone piles or hollow bricks or cages in shrimp ponds.
2. Disinfect the bleached whole tank, then add fresh water and cultivate the water.
3. The stichopus is vegetative as a bait. As long as the water quality is cultivated, there is no need to feed it again.
4. The water temperature to which sea cucumber is adapted is minus 3 degrees to 28 degrees above zero, and the salinity is high.
5. During the summer hot season, shrimp ponds should raise the water level by absorbing tides to facilitate the crossing of water.
6. The time for seedlings is generally 9 to 11 months per year. The stocking density per mu is 4,000, and the seedlings should be good.
7. Participation and shrimp polyculture, the ginseng can purify the water, so as to achieve the double harvest of the ginseng and shrimp.
Face Temperature Machine,Temperature Face Recognition,Face Recognition Temperature Scanner,Face Recognition Time Attendance
Chongqing Huifan Technology Co., Ltd , https://www.hfsecuritytech.com