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Nanodrug for Foot-and-mouth Disease

China Agriculture University announced on M arch 26, 2008 that it has developed a dry acid disinfection powder at nanoscale to effectively prevent pig's foot-and-mouth disease. Field tests have shown that an hour after spray of the dry disinfection powder, the number of Escherichia coli in the air was slightly higher than the liquid disinfection group, with the number of same bacteria in the plate being at 13. However, the follow-up results show that the number of Escherichia coli in the pen and air has been kept at a low level, with the minimum value appeared 12 hours after the spray, casting a stark contrast to the disinfection liquid that would leave countless bacteria 12 hours after the spray. Under the traditional approach, disinfection liquid would usually be applied both in and outside animal pens. The old approach has numerous inherent disadvantages, including short time duration, being easily affected by humid environment and pH balance, and contamination by wastes and feeds, which would enhance the number of diseases causing microbes. The new approach produces no aforesaid disadvantages. Made up of toxicant and pollution free nanomaterials, the dry disinfection powder is safe to both humans and animals.

Trial applications on several hundred thousand pigs in some ten pig farms in Guangdong, Jiangxi, Hunan, and Shandong, have confirmed its noticeable effect in treating foot-and-mouth disease. Tests also show that the dry powder is able to absorb water and viruses in the environment, and facilitate the healing of pigs' external wounds. For example, a pig farm in Shandong reported that the application of dry disinfection powder has noticeably improved pigs' breeding environment, and removed the strong odor of ammonia, allowing piglets to live in a dry and comfortable environment, with a significantly reduced occurrence of diseases, and a raised survival rate of piglets to 95%.

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