When buying fry and fingerlings, care should be taken to select good-quality seed with strong physique, neat specifications, lively swimming, strong anti-water capability, no damage and disease, and pure breeds. Before transport, it must be done by pulling a net to remove body excrement and make it strong and adapt to the intensive environment. Floating on the water, traveling alone, and sluggish sluggishness are not suitable for long-distance transportation. Dead fish should be cleared in time. The following methods are commonly used for transportation:
1. Bucket transport: fish farmers use barrels (barrels, iron drums) to transport fish species, barrels can hold about 3/4 of water, each carrying 80,000 to 100,000 tails, and 1.7 to 2 centimeters long. About 10,000 Ukrainian calves, 3.3 to 5 cm of 4000 to 5000 fish species, 6 to 8 cm species of 600 to 700 fish, 9 to 11.5 cm species of 400 to 500 fish, and 13 to 16 cm species of fish 200 to 300. Due to the influence of water temperature, weather, seed quality and transportation distance, the density of shipments must be properly adjusted due to time and place.
2. Transporting fish in canvas buckets: Currently available canvas buckets are cylindrical and square. Commonly used specifications are drums with a height and diameter of about 95 cm or square drums with a length, width and height of about 90 cm. There are protective covers around the upper mouth or on all sides to prevent water and seed from spilling out. The canvas bucket is supported by a metal frame and a wooden frame, which can be disassembled and folded to facilitate carrying. Each canvas bucket can hold 400-450kg of water, accounting for 60%-70% of the entire container; in the case of 15-25°C, it can generally transport 300,000-400,000 fry, and 30,000-50,000. The 6.6 cm species of 10,000 to 15,000 fish; 10 cm species of 5000 to 6000 fish; 13 cm species of 300 to 500 fish. 4 tons of cars, generally can put 6 canvas buckets, such as barrels with the same size of plastic liner bags and carrying oxygen bottles oxygen, more suitable for long-distance transport.
3. Oxygenation and transportation of plastic bags: The fish is packed in water-filled plastic bags and then transported with oxygen and sealed. This transport density is high and the survival rate is high. It is a commonly used method of transport for fry and fingerlings. Plastic bags are generally about 70 to 80 centimeters in length and 40 centimeters in width. There are packaging cartons that are used outside. Each bag can contain 50,000 to 100,000 fry, about 10,000 for Wuzao, 3000 for summer flowers, and 200 to 300 fishes with a body length of 10 cm. Check the plastic bag for holes and holes before loading the fish. Put about 1/3 of the water first and pour the fry or fingerlings into the bag. Extrude the air in the bag from bottom to top with both hands, and then oxygenate until the plastic bag bulges, gently press the dent, and tie the bag. Mouth, tie back after the break. Plastic bags should not be placed in areas with rough hard or sand particles to avoid punctures. Put a good plastic bag inside the carton. The oxygen bag transport time can be up to 30 hours. Minimize the number of stays and the time during transportation, and stop at a cool, ventilated place during the stay. Do not expose it to the sun.
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