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How to raise sea cucumber seedlings? What is the method of raising sea cucumber seedlings?

1. Breeding process: Sea cucumber harvesting and breeding → Artificial induction and insemination → Fertilized egg hatching and larval selection → Cultivation management (control of reasonable cultivation density, water exchange and water quality management, appropriate Bait and feeding, production and placement of attachments) → Cultivation of juvenile ginseng.

2. Feed: The larvae should be fed with feed after they are selected into the pond. Feeding sufficient and suitable food is a prerequisite for normal growth, development and smooth metamorphosis of larvae. Suitable baits include Salina salina, Chrysophyllum zhanjiangensis, Chaetoceros mousoni, Phaeodactylum tricornutum, and Nitzschia minor. Better cultivation effects can be achieved by feeding the above baits singly or in mixture. However, the effect of mixed feeding of 2-3 kinds of bait is better. Mixed feeding of bait can make their nutrition complementary and meet the nutritional needs of larvae. The feeding amount can be 15,000-20,000 cells/ml in the first three days, and 30,000 cells/ml thereafter. If there is insufficient bait, 0.5ppm yeast powder supernatant can be added. Although flat algae and heterocolloidal algae have certain feed effects, they are not suitable as feed for the larval stage of sea cucumbers. When the larvae metamorphose into bottle-shaped larvae, in order to make full use of the water body, increase the attachment area, and change their feeding habits, suitable attachment equipment should be put in at this time. Inoculate the attached equipment assembled with corrugated plates with benthic diatoms. About 10 days before use, brush off the attached benthic diatoms and filter them repeatedly with N×103 sieves to remove large algae and aged algae. , inoculate again, so that a thin layer of benthic diatoms is evenly attached to the plate again, so that the young ginseng can eat it early.

3. Disease prevention and control: In order to enhance the reproduction of benthic diatoms, the light can be adjusted appropriately, but the light intensity should be controlled at around 1000lux. Too strong light will easily lead to the growth of green algae and oscillating algae; during the cultivation period, weak light should be given Inflate, in order to effectively kill copepods, copepods must be killed in advance before the attachment is put in. After the attachment is put into the pool, medication must be administered every 7-10 days; during high water temperature periods (above 20°C), the water must be changed daily Afterwards, 1-3 ppm antibiotics should be administered alternately to prevent the occurrence of diseases.