Table 4 Cow composite milk somatic cell count (SCC) (mean, SD) and related factors in Finland in 1991, 2001 and 2010
1991 | 2001 | 2010 | ||||
|---|---|---|---|---|---|---|
SCC × 103 | SD | SCC × 103 | SD | SCC × 103 | SD | |
Ayrshire | 201.8 | 425.3 | 186.6 | 467.8 | 182.0 | 472.8 |
Holstein | 240.5 | 452.5 | 209.3 | 483.4 | 210.7 | 506.7 |
Othersa | 245.8 | 488.8 | 208.2 | 521.8 | 199.8 | 522.9 |
Tie-stall | n/ab | n/ab | 186.5 | 457.3 | 179.1 | 450.9 |
Free-stall | n/ab | n/a2 | 197.8 | 488.1 | 200.2 | 499.2 |
Free-stall (AMS) | n/ab | n/ab | n/ab | n/ab | 238.8 | 599.4 |
Organic production | n/ab | n/ab | n/ab | n/ab | 213.9 | 539.9 |
Conventional production | 209.2 | 431.4 | 192.0 | 471.0 | 191.7 | 484.5 |
South | 217.9 | 460.6 | 206.6 | 510.9 | 204.5 | 526.4 |
West | 219.8 | 456.0 | 206.2 | 508.4 | 200.2 | 499.8 |
East | 194.9 | 393.5 | 177.7 | 425.1 | 180.4 | 455.2 |
North | 202.6 | 411.7 | 178.0 | 432.2 | 182.9 | 463.4 |
Total | 209.2 | 431.4 | 192.5 | 472.5 | 192.0 | 485.5 |