Management technology of sea cucumber seedling cage culture

With the initial success of the cage culture of sea cucumbers in the past two years, many farmers believe that cage culture can effectively save costs and increase profits, so in 2017 most of the participating circles began to increase investment in cages. With the universal installation of cages, the demand for sea cucumber seedlings has increased, and the poor yield of seedlings has led to an increase in the price of sea cucumber seedlings, which has caused most farmers to fall into the hesitation of whether or not to invest seedlings. According to the analysis of the current farming situation, if an average of one pound of seedlings per cage can not produce more than four pounds of sea cucumbers, it will face the dilemma of low aquaculture efficiency, so how to manage the cage seedlings has become the most concern of farmers. Here are some suggestions for the management of cage seedlings.

Seed selection

Try to select the sea cucumber seedlings in the local nursery and reduce the damage caused by the stress caused by the long transportation time and the large difference in water quality and temperature. Choose seedlings without glass sea squirts. When seeing the seedlings, the seedlings in the seedling pool are distributed evenly, stretched, strong in the burr, full in the intestines, normal feces, and good body color. In addition, attention should be paid to the odor in the workshop and air bubbles on the water surface. Bubbles are large and numerous, difficult to spread, and the water quality is sticky, indicating that there may be problems in the digestion of ginseng seedlings, or that there is enteritis, and attention should be paid; try to choose seedlings with little or no antibiotics.

Reforestation management

Before the seedlings are cultured, they must be fed with water and bacteria to cultivate natural foods. The anti-stress for releasing seedlings should be used for 3 days to 5 days for “activation” (20 cages/bag) to strengthen the constitution, shorten the time for seedling easing, and increase the survival rate of transplanting seedlings. Let the seedlings be as evenly distributed as possible when the seedlings are released. After emergence, if there are chemical phenomena and damage, use a small, water-soluble povidone-iodine solution for immediate treatment.

Post-emergence management

Reasonable feeding: Observe the status of sea cucumber eating and defecation, and make timely adjustments accordingly. (1) The nets can be properly fed with sea mud and algae powder when there is no natural bait; (2) The ponds with more water quality can have more natural bait in the cage. The bait is more "and" more bacteria "replaces the bait; (3) The cage is dirty and can be fed "Li Miao Duo" appropriately, reducing the enteritis, anoxicity, dehiscence, etc. caused by ingestion of harmful substances and calli.

Strengthen physical status: Regular observation of the status of the seedlings, such as the occurrence of poor vitality, splashing "lifeline + nutrition fast line" to strengthen the seedlings constitution, improve the survival rate and growth rate.

Clean the nets: In order to ensure the smooth flow of the cages, to provide a good water quality environment for the seedlings, you can use the “quick solution” and brush to clean the nets regularly.

Finally, it is recommended that farmers should install cages in appropriate amounts. Do not use large numbers of cages to prevent the breeding of whole sea cucumber ponds, such as shading, wind blocking, and pond contamination caused by feeding.

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