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Table 4 Source herd betweenness centrality scores for beef and dairy replacement breeding cattle purchased in Scotland

From: Not all cows are epidemiologically equal: quantifying the risks of bovine viral diarrhoea virus (BVDV) transmission through cattle movements

  Number of replacement breeding cattle Number of herds Median source herd betweenness centrality
Beef replacement cattle    
Open heifers 16 420 3229 82 521
Pregnant heifers 5795 1369 106 630
Open cows (dry) 1150 565 74 212
Open cows (calf at foot) 8458 1348 199 017
Pregnant cows (dry) 8491 1226 66 177
Pregnant cows (calf at foot) 3900 745 70 871
Dairy replacement cattle    
Open heifers 2916 430 137 442
Pregnant heifers 2643 352 110 976
Open cows (dry) 707 223 111 983
Open cows (lactating) 3839 538 192 613
Pregnant cows (dry) 1276 230 109 568
Pregnant cows (lactating) 1330 217 129 386
  1. Data from 01 July 2005 through 30 June 2006 is reported. There were a total of 4934 beef herds and 804 dairy herds that sold replacement breeding cattle. Note that some herds sold multiple types of replacement breeding cattle.