How to protect a pig farm from ASF?

African Swine Fever (ASF) is the most worrying of the virus diseases at present, writes management expert John Gadd. Due to mandatory restrictions on pig meat trade in affected areas, this restricts income and wrecks cash flow, both of which can close pig businesses at all levels. What can farm owners do? There has been much written about ASF recently, so why am I adding to the pile of information? I have been around long enough to have been in the front line of several Foot-and-Mouth Disease a