South China Institute of Technology developed "Treasure fish vaccine" instead of antibiotics
According to relevant reports, if aquatic products do not become ill, they do not necessarily have to rely on antibiotics. In order to fight off the "infection prevention" before the disease comes, we will be able to stay away from germs. Professor Zhang Yuanxing from the School of Bioengineering of East China University of Science and Technology led the research group to develop the "Treasure Fish Vaccine" in China and obtained a biosafety certificate, and entered the phase of clinical trial application of vaccines. This disease-fighting strategy, which uses vaccines instead of antibiotics, can make the already vulnerable fragrant fishes and other aquatic products not only unhealthy, but also safe for the public to eat. There are many problems with aquatic products taking medicines According to reports, fish and humans, such as long-term living in a crowded, polluted environment, bacteria will be popular. According to statistics, the annual output value of marine fish culture in China has exceeded tens of billions of dollars, but the annual incidence of fish diseases in marine aquaculture is more than 50%, and the loss rate is about 30%, of which bacterial diseases have the most serious impact. In order to avoid the death of aquatic products and reduce losses, the most common practice for farmers is to use antibiotics. Although antibiotics can eliminate pathogens in the prevention and treatment of aquatic diseases, they also bring about drug residue problems, leading to a series of problems such as drug-resistant pathogens, aquatic drug residues, and environmental pollution. Many citizens are afraid to eat aquatic products that have taken antibiotics, and they are afraid to even buy "lake fish." The vaccine will start to work in water Turbot as a cultured low-temperature expensive fish is very susceptible to deadly diseases such as Vibrio anguillarum. R&D personnel said that even though it was dubbed “vaccineâ€, the “Treasure Vaccine†in the laboratory was not an imaginative vaccine, but a natural bacterium that had undergone “genetic surgeryâ€. The pathogenic bacteria of the fish, Vibrio anguillarum, are sick and completely replace antibiotics. During the R&D process, researchers used a "knock-out" technique to "knock-off" a virulence factor synthesis gene of a bacterium, causing it to lose its toxicity. "The vaccine is also a kind of fungus, it is toxic, so we have to use genetic engineering technology to reduce its virulence." R & D personnel explained. In addition, fish vaccines developed by researchers are all live bacteria. The farmers can put the vaccine into the water and they can have a good effect on the fish without having to vaccinate them one by one. When needed, the fish fry can be immersed in the water for three minutes in the vaccine configuration. This will set up a health barrier for the giant fish. The vaccine will only be biologically modified for Bdellovibrio and will not introduce genes from other organisms. The formation of "genetically modified fish". After the vaccine is used, the meat quality of the turbot is also as fresh as in the natural state.
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