Herd level inputs for simulation model.

1Proportion of eligible cows that are served prior to intervention.
2Proportion of served cows that conceive prior to intervention.
3Cumulative 305 day milk yield (thousand kg).
4Proportion of heifers in the herd.
5Cost of changing the interval between subsequent calvings.
6Depreciation cost of culling a cow and replacing with a heifer (£).
7Cost of each artificial insemination (£).
8Voluntary waiting period (days) from calving to first service.
9Length of oestrous cycle (days).
10Metabolisable energy (MJ/kg dry matter).
Herd level inputs for simulation model.