Variable Level | β1 | SE2 | z-value | P of z-value |
---|---|---|---|---|
Intercept | -0.36 | 0.59 | -0.62 | 0.54 |
Housing conditions | Â | Â | Â | Â |
   Tied system | Ref.3 |  |  |  |
   Loose system | 0.71 | 0.316 | 2.23 | 0.03 |
Animal dehorning | Â | Â | Â | Â |
   No | Ref. |  |  |  |
   Yes | 1.11 | 0.302 | 3.66 | 0.0002 |
Presence of horseflies in summer | Â | Â | Â | Â |
   Never or seldom | Ref. |  |  |  |
   Sometimes or often | -0.24 | 0.341 | -0.70 | 0.49 |
   Very high | 0.82 | 0.321 | 2.56 | 0.01 |
Colostrum feeding | Â | Â | Â | Â |
   No | Ref. |  |  |  |
   From dam to calves | -1.11 | 0.52 | -2.13 | 0.03 |
   Pooled | -0.90 | 0.55 | -1.65 | 0.10 |