Perimeter biosecurity

I’ve been asked to forecast what a pig farm perimeter might look like a couple of decades into the future. Starting from a a excellent suggestion by the PIC company that it should be divided into ‘clean’ and ‘dirty’ sectors, I have taken things somewhat further. My ‘dirty’ sector is from ‘A’ on the plan to ‘B’, see Figure 1 below. It is where most of the coming and going takes place. On a larger farm this©could take up the whole