There are some delays at the border as a result of the foot and mouth crisis. We advise you to check border waiting times before your departure. If the farmer is also a cattle breeder this is not possible. If the farm is an arable farm it is OK to stay there. Do contact your hosts before leaving home.
Humans can carry the foot and mouth virus on their clothes or shoes for instance, and pass it on.
It is also difficult to control what the visitors feed to the animals. Yes, in most parts of Holland it is possible. However, not all stables are open. If, in addition to horses, there are cloven-hoofed animals present on the property, visitors are banned. If there are only horses at the stables, visitors are allowed.