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The Use Of Antimicrobial Activity During The World War

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Antibiotics were introduced to people in 1929, which could restrain the normal growth of the other bacteria called antimicrobial activity, was found by British scientist Alexander Fleming by coincidence. Then scientists used antibiotics, to cure injured soldiers and got great success during the World War. With the efforts of many scientists in the past half of the century, thousand kinds of antibiotics are found, which could be natural, semi-synthetic or synthetic, and many of them are used in medical field successfully. In this time and age, with the astounding development of large-scale livestock feeding operation of swine, poultry and especially cattle, the antibiotics are used globally to keep the animals healthy and promote their …show more content…

And in the European Union in the 1990s, 5 million kg of antibiotics has been reported in total, but only 3.5 million kg were used for therapeutic purposes (Boxall et al., 2000). In China, antibiotics have been widely used in livestock industries since the early 1990s. The annual total usage of veterinary antibiotics has reached approximately 6000 tons, most of which happens in the economically developed regions (Hou, 2003). It seems that human can start to overcome most of diseases by using antibiotics without any bad influence. But as time goes by, the side effects show up. The excessive use of antibiotics brings the disadvantages and problems with the heaps of advantages simultaneously. Antibiotics are not only exacerbating the health risk of animals, and human beings, but also exacerbating the environmental impairment. The antibiotics are used to treat and prevent diseases in human beings and animals’ medicine, but there are many kinds of risks deriving from the antibiotics therapies, which include the development and spread of resistant bacteria strains and environmental contamination; besides, the micro-biotic organism is also a big issue we need to concern about. Firstly, under the overexposure of antibiotics, the microbes in the livestock’s internal environment especially in the intestine could acquire the new piece of DNA, and the changed genes will make livestock resist antibiotics when the next time they really need to use

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