Parameter |
No. of studies |
Mean |
Median |
Minimum |
Maximum |
Female calf mortality risk (%) |
6 |
8.1 |
7.0 |
2.0 |
16.6 |
Male calf mortality risk (%) |
5 |
6.4 |
2.0 |
2.0 |
14.0 |
Female/male replacement mortality risk (%) |
1 |
1.0 |
1.0 |
1.0 |
1.0 |
Cow mortality risk (%) |
4 |
4.0 |
5.0 |
1.0 |
5.0 |
Age at first calving (months) |
1 |
33.4 |
33.4 |
33.4 |
33.4 |
Calving rate (%) |
13 |
87.2 |
90.0 |
79.0 |
94.0 |
Milk offtake per lactation (kg) |
21 |
3 911.0 |
3 195.0 |
2 112.0 |
6 715.0 |
Weight of mature cow (kg) |
5 |
414.0 |
400.0 |
400.0 |
440.0 |
Weight of mature bull (kg) |
1 |
450.0 |
450.0 |
450.0 |
450.0 |