Table 1.
Summarizing results of the multivariable analysis of BNP using a sire-dam model ( n = 411)
| Heritability estimate (SE) | ||||
|---|---|---|---|---|
| Sire | 0.00 (0.00) | |||
| Dam | 0.19 (0.08) | |||
| Variable | Category ( n ) | β (SE) | Odds ratio | Wald test P -value |
| Lactation number | 1 (67) | Referent | 1 | 0.021 |
| 2 (106) | 0.49 (0.57) | 1.63 | ||
| 3 (96) | 1.10 (0.60) | 3.00 | ||
| 4 (70) | 0.77 (0.63) | 2.17 | ||
| 5 ≥ (72) | −0.14 (0.68) | 0.87 | ||
| Number of Pregsure© BVD vaccinations | ≤2 (118) | Referent | 1 | 0.014 |
| 3 (134) | 0.35 (0.42) | 1.42 | ||
| 4 ≥ (159) | 1.17 (0.45) | 3.21 | ||
| Time since last Pregsure© BVD vaccination | Per month | 0.03 (0.02) | 1.03 | 0.214 |
The data included 102 BNP and 309 non-BNP dam-calf combinations.