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Table 1 Factors associated with milking process infrastructure on 398 Irish dairy farms, and associations with bulk tank SCS (back transformed SCC*103/ml in parentheses) after controlling for region

From: Farm management factors associated with bulk tank somatic cell count in Irish dairy herds

Variable Level % SCS (SCC) SE P
Parlour design Side by side 45 12.49(266) 0.024 ns
  Herringbone 48 12.56(285) 0.023  
  Abreast, stall, byre 7 12.51(272) 0.061  
Number of milking units ≤5 13 12.50(269) 0.044 ns
  6 33 12.55(282) 0.027  
  7 and 8 24 12.53(278) 0.032  
  9 and 10 16 12.47(260) 0.040  
  12 to 30 14 12.54(279) 0.042  
Pipeline system Direct pipeline 62 12.58(292) 0.020 ***
  Recorder plant 38 12.43(250) 0.027  
Automatic cluster removers Yes 5 12.37(237) 0.068 *
  No 95 12.53(278) 0.016  
Heated water in parlour Yes 40 12.45(255) 0.025 ***
  No 60 12.58(290) 0.020  
Frequency liners change ≤once a year 64 12.52(274) 0.020 ns
  >than once a year 36 12.53(278) 0.027  
Procedure to isolate milk from mastitic cows Churn/milking bucket 55 12.53(277) 0.021 **
  Through the milk line 16 12.63(307) 0.038  
  Dump line 5 12.52(273) 0.069  
  Into the milking jar 24 12.43(251) 0.034  
  1. ns (not significant), * P < 0.05, **P < 0.01, ***P < 0.001
  2. Somatic cell count (SCC), somatic cell score (SCS)