Alive sturgeon low-temperature anhydrous transportation technology

[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%.