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Table 2 Average values of infestation with rodents of different farm categories assessed by PCOs at the beginning of the project

From: Start-up financing of professional pest control in pig farming in North Rhine-Westphalia in Germany

Farm structure Number Infestation with rats x̅ ± SD Infestation with mice x̅ ± SD Extent of problems with rodents x̅ ± SD
Category sow breeding 11 2.1 ± 1.5 1.9 ± 1.2 2.1 ± 1.2
Category piglet breeding 3 0.3 ± 0.6 1.0 ± 1.5 1.1 ± 0.2
Category fattening farms 18 1.6 ± 1.4 2.1 ± 1.2 2.2 ± 1.0
Total 32 1.7 ± 1.5 2.0 ± 1.2 2.0 ± 1.1
  1. Values range from zero to four; high values stand for high infestation with rodents