Table 5 Mean teat hyperkeratosis score (HK) for each herd (A, B), and for two pre-milking teat disinfection treatments (PTD: that received pre-milking teat disinfectant and NPTD: did not receive disinfectant) and at three sampling points during lactation
From: Effect of pre-milking teat disinfection on new mastitis infection rates of dairy cows
| HK | s.e. | Significance p-value | |
|---|---|---|---|
| Herd A | 2.04 | ||
| Herd B | 1.64 | 0.04 | < 0.001 |
| PTD | 1.83 | ||
| NPTD | 1.84 | 0.05 | 0.82 |
| Day 1 (April) | 1.73 | ||
| Day 2 (July) | 1.81 | ||
| Day 3 (October) | 1.98 | 0.03 | < 0.001 |