Fig. 6

Frequency distribution of the undirected average topological overlap of the nodes (C _i ). The illustration is separated by farm type, i.e. multipliers (a), farrowing farms (b), finishing farms (c) and farrow-to-finishing farms (d). The categories are organized as follows: 0: C _i  = 0, 1: 0 < C _i  ≤ 0.2, 2: 0.2 < C _i  ≤ 0.4, 3: 0.4 < C _i  ≤ 0.6, 4: 0.6 < C _i  ≤ 0.8, 5: 0.8 < C _i  ≤ 1