Table 4.
Standardized regression coefficients of variables on DMI per kilogram weaned, winter feed use per cow, and returns over variable costs per cow.
| Dependent Variable | |||
|---|---|---|---|
| Independent Variables | DMI/kg Weaned | Winter Feed Use | Returns Over Variable Costs |
| Postpartum interval (PPI) | −0.003 | −0.026 | −0.073 |
| Calved in first 21 days | −0.098 | ||
| Cycling in first 21 days | −0.032 | ||
| Pregnancy percentage | −0.033 | −0.013 | |
| Replacement heifers required | 0.184 | −0.065 | −0.154 |
| Pounds cull cow sold | 0.119 | ||
| Calf mortality | 0.173 | ||
| Grazing hectares per cow | −0.085 | ||
| Grazing days per ha | −0.943 | ||
| Base NEm requirement (NEm_Req) | 0.385 | −0.290 | |
| Total NEg intake | 0.177 | ||
| Purchased feed per cow | −0.335 | ||
| DMI per day per cow | 0.028 | ||
| Forage TDN (Forage_TDN) | −0.238 | ||
| Forage yield per ha (Forage_Yield) | 0.098 | 0.152 | |
| Actual weaning weight | −0.609 | ||
| Kg weaned per cow exposed | 0.135 | 0.444 | |
| Mean age of cull cows | −0.006 | ||