Fig. 1

Predicted probability of a herd being BDD-lesion positive given different farm management practices. 1 = a closed herd, 2 = a herd having heifers co-grazing with animals from other properties only, 3 = a herd having heifers co-grazing with animals from other properties and having purchased heifers, 4 = a herd having purchased heifers only; BDD = bovine digital dermatitis