Table 2.
Herd characteristics of herds with low calf mortality (≤ 5%) and high calf mortality (> 5%) in 50 German dairy herds, visited between September 2012 and October 2014.
| Herd characteristics | Low calf mortality | High calf mortality |
|---|---|---|
| Number of herds | 25 | 25 |
| Median calf mortality risk | 2.9 (Q 25%: 2.2; Q 75%: 4.0) |
7.1 (Q 25%: 5.5; Q 75% 8.7) |
| Median herd size | 447 (Q 25%: 327; Q 75%: 602) |
402 (Q 25%: 340; Q 75%: 493) |
| Median milk yield (kg per cow and year) |
9920 (Q 25%: 9384; Q 75%: 10922) |
9798 (Q 25%: 9425; Q 75%: 9873) |
| Mean age at weaning (days) | 76.7 (SD = 10.5) | 76.4 (SD = 11.2) |