|
Characteristics of farms used in the study |
||
| Tied housing |
Loose housing |
|
|
|
||
| Number of herds |
6 |
5 |
| Average herd size (min; max) |
259(200–350) |
318(130–460) |
| Average milk yield per herd kg/305 d (min; max) |
8056(5822–9130) |
7194(6206–8061) |
| Total number of freshly calved heifers |
423 |
640 |
| Average number of calved heifers per herd (min; max) |
71(50–82) |
128(50–270) |
Kalmus et al. Acta Veterinaria Scandinavica 2006 48:21 doi:10.1186/1751-0147-48-21 |
||