Table 1.
Characteristics of enrolled herds from herd records; s.d.: standard deviation; i.q.r.: interquartile range.
| East | Midwest | West | Total | ||
|---|---|---|---|---|---|
| Herd count (n) | 37 | 59 | 7 | 103 | |
|
| |||||
| Herd Size (cows per herd) | Mean (s.d.) | 509.7 (509.1) | 558.9 (1020.5) | 651.3 (496.0) | 547.5 (836.3) |
| Median (i.q.r.) | 221.0 (560.0) | 241.0 (586.0) | 477.0 (151.0) | 267.0 (560.0) | |
| Range | 82 – 1832 | 59 - 7453 | 339 - 1764 | 59 -7453 | |
|
| |||||
| Proportion Holstein | Mean (s.d.) | 0.90 (0.20) | 0.96 (0.10) | 0.96 (0.50) | 0.93 (0.14) |
| Median (i.q.r.) | 0.98 (0.10) | 0.99 (0.03) | 0.99 (0.08) | 0.99 (0.04) | |
| Range | 0.06 – 1.00 | 0.37 – 1.00 | 0.89 -1.00 | 0.06 -1.00 | |