Analysis of the infection channels of BSE in Japan

Introduction: according to the Japanese economic news on December 16, since the first case of mad cow disease was found in Chiba County on September 10 this year, the number of beef sales in the Japanese market has plummeted Consumers have almost reached the level of "talking about the color change of cattle", and customers are far away from beef Of course, the price of beef has also dropped to about one-third before the discovery of mad cow disease, and many barbecue shops and restaurants that mainly consume beef are also facing the risk of closure So Japan decided to start a nationwide inspection of cattle to see if they were infected with BSE Two months have passed since this decision Following the discovery of the first BSE in Chiba in September, a third BSE was found in Hokkaido and Qiyu counties in Japan So Japan began to find out the infection channels more thoroughly and strengthen the import management of substitute dairy products, meat and bone meal and other related commodities According to the survey results of Japan's Ministry of agriculture, forestry and fisheries, the three BSE cows found were almost born at the same time in the spring of 1996, and all of them were females When they were 5 years old, they stopped feeding cows and turned to food breeding It was during this period that BSE was found This feature was found in all three cattle infected with mad cow disease In particular, it should be noted that the milk substitutes used by the three cattle during their young age were all produced by Gaoqi factory of qunma scientific feed Research Institute The substitute milk is usually used as the substitute of cow's milk between 7 days and 1 month after the calf is born Its ingredients are skim milk powder, animal fat and plasma protein According to a survey conducted by the Ministry of agriculture, forestry and fisheries, the substitute milk bags used by Japanese cattle farmers and cattle raising places contain animal fat produced in the Netherlands, the country where BSE occurred in 1997 The expert consultation meeting of BSE in Japan's Ministry of health and labor concluded after research that the animal fat in the substitute milk had obviously mixed with BSE pathogen protein The average incubation period of BSE is five years, which coincides with the birth age of three BSE infected cattle in Japan The idea is that the animal fats produced in the Netherlands are mixed with proteins that infect mad cow disease The substitute milk containing the protein was fed to the calf Meat and bone meal import channel, which has always been regarded as an important source of infection, is gradually being understood In particular, the Italian meat and bone meal production and processing plant is suspected of failing to comply with the sanitary conditions signed with Japan According to the report on the source of BSE infection, the health guarantee conditions concluded between Japan and Italy stipulate that the processing of meat and bone meal should be heated at a high temperature of 136 degrees for 30 minutes in a humid and hot environment, which is the minimum guarantee to remove the source of infection However, when Japan's Ministry of agriculture and forestry sent personnel to Italy in October to conduct relevant investigations, it was found that the pressurizer in a factory that processes meat and bone meal was newly assembled in June 1998 According to the trade statistics of Japan's Ministry of finance, Japan imported 186 tons of meat and bone meal from Italy in the three years from 1995 to 1997 In response to the opinion of Japan's Ministry of agriculture and forestry, the Italian government stated that: the processing of meat and bone meal has always been carried out with a heater, and proper treatment has been made before June 1998 The Ministry of agriculture and forestry believes that there are still unclear doubts and will make a detailed investigation in the future Japan's Ministry of agriculture and forestry, while investigating the landing channels directly to Japan from Holland, Italy and other countries where BSE occurs, has also sent relevant officials to countries where BSE has not occurred, such as South Korea, the Philippines, Indonesia and other countries exporting meat and bone meal to Japan to learn about the situation In order to find out whether the meat and bone meal exported by the UK, where BSE is spreading, has been imported into Japan through countries where BSE does not occur The other channels of BSE infection in Japan are that the meat and bone meal of domestic sheep, which may be the source of BSE infection and the disease of the sheep of the origin "sculepi", is fed to the cattle; the meat and bone meal produced and processed by the infected cattle is imported and mixed in the "fish meal" and fed to the cattle; before this new BSE, the latent BSE in Japan Infected cattle may be processed into meat and bone meal, which is also fed to cattle as part of the feed In order to fundamentally eliminate the transmission channels of BSE, Japan is making a thorough investigation from all possible channels and possibilities, so as to strictly manage the relevant imported goods and alleviate the fear of Japanese consumers of BSE (author:) share to feed Weibo share to: