[Aitor Devesa]

If there are not double perimetre fence, what can you differentiate between clean and dirty area? I think it is clear the clean and dirty area of the house ( house hygiene lock) but not in the farm. Because if you consider that once you cross the hygiene lock of the farm it is a clean area, the dirty area is everything outside the perimeter of the farm, which can no longer be considered a farm as such.

[Jocelyn Marguerie]

as you said, clean and dirty zones of house and house hygiene lock are, most of the times, cleary defined.
talking about farms, we have some experiences with implementation of zones and ways, different between clean (feed and day-old animals supply) and dirty (animals departure and manure). opposite sides of the house. When possible, I think it can help with preventing long-term contaminations and cross-contaminations.

[Author]

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