Alive sturgeon low-temperature anhydrous transportation technology

A sturgeon and low-temperature technology, which is applied in the field of low-temperature anhydrous transportation of live sturgeon, can solve the problems of occupying transportation space and weight, increasing transportation costs, increasing the cumbersomeness and cost of the processing process, and achieving reduced volume and weight, and reduced The effect of transportation costs

Inactive Publication Date: 2008-03-12
AQUACULTURE INST OF GUIZHOU PROVINCE
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AI-Extracted Technical Summary

Problems solved by technology

The Chinese patent with the publication number CN1071803 discloses a method for fish and shrimp hibernation, resurrection and freshness preservation. In this method, the fish and shrimp are first pre-hibernated and then placed in low-temperature auxiliary materials for transportation. "Auxili...
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Method used

1, stop eating: the commercial sturgeon (0.75~3.5kg/ tail) that will be transported is stopped feeding 2~3d, makes its diges...
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Abstract

The present invention provides a low-temperature transportation technology without water of live sturgeon; the transported live sturgeons are not fed for 2 to 3 days and put into water with a temperature of 1 to 2 Celsius degrees for precooling for 10 to 15 minutes; and then the sturgeons are put into an insulation box in which a seal bag is laid; the air in the seal bag is extruded and the seal bag is tied tightly after oxygen is infused; after the insulation box is sealed, the sturgeons can be transported and the transportation time is less than or equal to 18 hours. Compared with the prior art, sturgeon is a sub-cold water fish which has a low temperature resistant nature and the method makes use of the nature to freeze the sturgeons for transportation without water; in this way, the volume and weight of fish transportation tools are greatly reduced and at the same time the transportation cost is reduced which is convenient for vehicle or aviation transportation. The transportation time can reach 18 to 20 hours and the survival rate in transportation can reach more than 99 percent.

Application Domain

Technology Topic

Air transportTransport time +9

Examples

  • Experimental program(1)

Example Embodiment

[0012] The technical solutions of the present invention will be described in detail below in conjunction with specific implementations:
[0013] 1. Stop feeding: stop feeding the commodity sturgeon (0.75~3.5kg/tail) to be transported for 2~3d to empty the digestive tract to reduce the excretion of fish feces and prevent the deterioration of the transportation living environment.
[0014] 2. Cooling: Put the sturgeon whose digestive tract has been emptied into water at a temperature of 1 to 2°C to quickly cool it down to make it in a cold paralyzed state. The cooling time is 10 to 15 minutes. During this time, the air pump is used to increase oxygen for the fish. The body temperature is close to the water temperature and is in a state of shock. Hold the tail handle of the fish body with your hand, and let the fish head face down. Generally, if the fish body does not move or the gill cover is slightly moved, the fish body is already in a cold paralyzed state, and you can pack it.
[0015] 3. Packing: Lay a plastic bag or nylon bag in the foam box, put the processed sturgeon in the bag end to end with the abdomen facing down. The fish bodies are close to each other but not overlapping each other. Sprinkle a certain amount of crushed ice evenly on the fish body to maintain the low temperature in the incubator. The amount of crushed ice depends on the length of the transportation time and the temperature. For example, the inner space is 58×48×12cm. , For a foam box with a bottom thickness of 2.5cm and a wall thickness of 2.0cm, when the total transportation time is 5-8 hours and the temperature is 25℃, only 0.25kg of crushed ice needs to be added; the total transportation time is 18 hours and the temperature is 30℃ , Crushed ice needs to add 1.5kg (note: the total transportation time is from the beginning of pre-freezing, and it is only after opening the box) Drive the air out of the bag and fill it with oxygen to ensure that the oxygen concentration in the bag is sufficient. Immediately after the inflation is completed, tie the bag with a rubber band and seal the foam box with tape for transportation.
[0016] 4. Thawing: After arriving at the destination, the temperature in the sealed bag should be gradually increased, and the temperature difference should not exceed 3°C. Generally after 15 to 18 hours of transportation, the sturgeon has woken up. After arriving at the destination, unpack the plastic bag or nylon bag and place it in the pool water (temporary). When the temperature in the bag is close to the temperature of the pool water (no more than 3°C), you can open the bag and remove part of it. After the pool water is poured into the bag to adjust the temperature, the fish can enter the pool.
[0017] The survival rate of sturgeon transported by this method can reach more than 99%.
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Description & Claims & Application Information

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