The origins of mad cow disease
Since its first appearance in Britain in 1986, mad cow disease in the country for nearly two dozen others, including Canada and now spreading to the United States. On Tuesday, the Federal Department of Agriculture (USDA), the first U.S. case of mad cow disease - or bovine spongiform encephalopathy (BSE), a fatal brain disease in cattle - had been found in an adult Holstein cow in Washington. Despite efforts by the USDA, the spread of BSE in the United States was and is inevitable, said Dr.David Katz, Research Center of the University of Yale-Griffin Prevention of Yale University.For both animals and humans, the global economy is a public health problem worldwide. West Nile virus and SARS are examples of recent outbreaks do not respect international borders. Or BSE, said
Katz. In the United Kingdom has reached a case of BSE between 1992 and 1993. At that time, three thousand have been infected cows, British officials said. In 1995, the first man to death - England. In response to the incidence of BSE, destroying millions of cattle in the United Kingdom and the European Union has banned imports of British beef.In May 2003, Canada reported its first BSE case. The Canadian government has quarantined herds, but it is possible that some were consumed by the flesh of men, according to an official with the Canadian government. It is believed that the cow contracted the disease through the consumption of commercial foods, including bone and brain of the animals. The spread of BSE is the result of feeding practices that harm animals in a variety of
ways, said Katz. The feeding of the animals to be herbivores are food, the portions of the earth, other animals has provided.This, of course, the risk of spread of the disease, but also changes in the quality and composition of meat intended for people with, said Katz.valuable nutrients from cattle were domesticated, and introduced harmful properties, because the way in which modern animal husbandry is carried out.
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