When crabs are transported, if there are few crabs, the time is short, and the transportation is near, general methods can be used for transport. If there are large-scale developments such as this year's Yangtze River larval crabs, for example: To transport 100kg to 400kg of natural crabs (referring to the large-eyed larvae) from Shanghai Chongming to Xinjiang, the flight time in air will take more than 5 hours, plus Two short-distance transportation and air transportation procedures are at the airport waiting time. The total transportation time takes about 30 hours. In this situation, new methods must be adopted to achieve better transport results. The methods for the success of the crab-raising people in Xinjiang in the practice of air transportation for crabs will be summarized, summarized, and briefly described below for reference by relevant personnel. 1. Put natural crabs just caught from the mouth of the Yangtze River in a cage for 10 hours. Prepare enough net cages made of nets like catcher miao nets in advance in fresh water ponds. Each cage has an area of ​​15m2. The depth of the cage is 50cm to 60cm. Each cage can be temporarily used. Raise 10kg of crab seedlings. Don't feed the crabs during the whole raising process. Hold the fish in the microcirculation water, but do not flush the crabs with oxygen. Practice has proved that if during the holding process, oxygen is applied to the crab seedlings, it will make the crab seedlings lack tolerance during the long-term transportation and cause a large number of deaths. Temporarily raise crab cages around the top edge of the cage to sew a plastic film with a width of 4cm to 5cm to prevent crabs from escaping from the cage. Of course, raising the crabs should arrange full-time care for the guards to prevent strong sunlight and strong winds. Heavy rain, water mice, etc. on crab seedlings and cages. 2. Prior to shipment of crab seedlings, prepare all kinds of necessary items and do other preparations in advance. (1) Foam packaging box. The box is 40cm in length, 15cm in width, and the box was originally designed for shipment of the Yangtze Blade Cutter. Before the crabs are shipped, two small holes are drilled on the left and right sides of each foam box, that is, near the bottom of the box. The distance between the two holes should be kept properly. The size of the hole is like the chopsticks for eating. The size of the cross-sectional area, the role of four small holes per box is the circulation of air. (2) Crab bags. The bag is not sold on the market and it needs to be processed by the seedlings themselves. The crab seedlings bags are also made of nets for catching miao miao nets, which are about the same size as the packing boxes and have zippers at the openings. 1kg of crab seedlings per bag. (3) 500g capacity plastic bottled pure water. Pre-fill a sufficient quantity of pure water bottles into ice for use. During the packaging, a pure water bottle that has become ice is fixed on the inner side of the cover of the packing box with a cloth tape, and during the transportation, the crab seedlings in the below crab seedling bags are used for cooling. Must pay attention to the integrity of the seal of the pure water bottle, do not leak water from the bottle after the ice in the transportation, otherwise it will cause damage to the crab seedlings. (4) Packing units and related precautions. That is, a foam packing box, a crab seedling bag, 1kg crab seedlings, and a bottle of 500g ice-cold pure water are a small package unit. After the crab seedlings are packed in the crab seedlings bag, the water in the bag should be thrown cleanly before the crab seedling bags can be put into the plastic foam box. Then pack five small packaging units together into one large packaging unit with the packaging tape. However, when packing with packaging tapes, be careful not to block the air outlet holes on the packaging box. After the packaging is properly posted, start loading the shipment immediately. . When you get to the airport, you usually use air-conditioned cars to transport them. You should be as careful as possible and not subject to vibrations. After the crabs are transported to their destinations, they should pay attention to the regulation of the temperature difference. The method is to put the crabs in a cool and well-ventilated place, and then put them again for a while. When restocking, we must choose fresh water and dense grassy waters, especially large-volume stocks of large-eyed larvae of the Chinese mitten crab, directly in large bodies of water. We must consider various “natural enemies†in the waters and adopt various effective preventive measures. In order to improve the survival rate of crab seedlings. Chongming will be transported to the 850kg crab seedlings of the Second Agricultural Division of the Xinjiang Production and Construction Corps in three separate trips this year. The survival rate of the first 150kg crab seedlings was only 50%. According to the analysis, the main reason may be due to the oxygen flushing of crabs. The second 400kg and the third 300kg were not flushed with oxygen during the period of raising, resulting in a survival rate of more than 90%. The crabs of the above three flights were all stocked in the “Qala†reservoir with an area of ​​80,000 mu. By mid-July, the crabs had grown to 500g and had 1 to 2 thousand small crabs. The growth was gratifying, and the entire reservoir was There are small crabs everywhere. Black Wolfberry Medium Grains,Black Goji Berry Medium Grains,Medium Black Goji Berry,Medium Black Goji Berry Tea NINGXIA STARLIGHT FOOD TRADE CO.,LTD , https://www.starlightfood.com