Variable and level | Number of herds | Median (IQR1) | P2 |
---|---|---|---|
Herd size | Â | Â | Â |
< 30 head | 35 | 43.3 (13.3, 60.0) | 0.514 |
30--49 head | 25 | 53.33 (16.7, 63.3) | Â |
≥ 50 head | 30 | 50.00 (26.7, 73.3) |  |
Cattle introduced into the herd within one year | Â | Â | Â |
No | 11 | 46.7 (27.3, 60.0) | 0.286 |
Yes, self-bred cows only | 33 | 52.2 (25.0, 78.0) | Â |
Yes, including purchased cows | 46 | 45.0 (13.3, 65.0) | Â |
Housing conditions | Â | Â | Â |
Tie housing | 68 | 41.9 (13.3, 62.5) | 0.001* |
Loose housing | 22 | 65.0 (52.2, 78.3) | Â |
Availability of own grazing area | Â | Â | Â |
Yes | 65 | 43.3 (13.8, 63.3) | 0.048* |
No | 25 | 52.2 (33.6, 78.0) | Â |
Presence of horseflies in summer | Â | Â | Â |
Never to seldom | 28 | 26.7 (13.3, 51.8) | 0.002* |
Sometimes to often | 29 | 47.6 (15.8, 65.0) | Â |
Very high | 33 | 63.3 (44.4, 83.0) | Â |
Animal dehorning | Â | Â | Â |
Yes | 58 | 60.0 (39.2, 73.3) | < 0.001* |
No | 32 | 20.0 (8.8, 43.0) | Â |
Plastic sleeve used for rectal palpation | Â | Â | Â |
One sleeve per cow | 73 | 43.3 (14.5, 68.3) | 0.012* |
One sleeve for more than one cow | 17 | 60.0 (47.8, 75.0) | Â |
Needle used for vaccination | Â | Â | Â |
One needle per cow | 86 | 46.7 (16.7, 65.5) | 0.100* |
One needle for more than one cow | 4 | 64.4 (50.5, 91.7) | Â |
Colostrum feeding | Â | Â | Â |
No | 7 | 76.7 (60.0, 95.7) | 0.003* |
From dam to calves | 63 | 42.1 (13.3, 60.0) | Â |
Pooled | 20 | 50.0 (36.7, 75.8) | Â |
Overall | 90 | 48.1 (17.1, 68.5) | Â |