This will help them to get in-calf quickly, calve early, and get back in-calf early as a first calver. Research shows they generally outperform under-target herd-mates in:
- milk production in their first two lactations
- reproductive performance.
First calvers take approximately 10 days longer than cows to recover from calving and start cycling again, so it’s common to mate them ahead of the herd at 15 months old. Because
of this calving pattern targets of first calvers are set above that of the
whole herd ensuring they have adequate time to recover. First calver calving
pattern targets are as follows.
calved by week three of calving
calved by week six of calving
The other key target for first calvers is the 90% three week submission rate.
Failure to reach the calving pattern or submission rate targets could be a reflection of:
- liveweight at 15 and 22 months old
- bull power or bull management
- body condition score at calving (target is 5.5)
- calving pattern
- management once in the herd.
MINDA and Fertility Focus report
Use MINDA Weights to see if your heifers hit liveweight targets at 15 and 22 months.
See how they calved on the Fertility Focus report or the Calving Rate by Age report on MINDA LIVE.
MINDA LIVE also provides by Age Group
graphs for submission, conception and in-calf rates for first calvers (two-year-olds).