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External calibration curve data from standards made in feces dairy cows consuming a lactation ration, beef steers consuming a finishing ration, and cows grazing native range
| Item | Feedlot | Range | Dairy |
|---|---|---|---|
| Calibration curve slope1 | 23.16 | 13.84 | 18.26 |
| Calibration curve intercept2 | 1.039 | 1.216 | 2.579 |
| R 2 | 0.9967 | 0.9982 | 0.9990 |
| Limit of blank, g/kg | 0.0510 | 0.0062 | 0.0417 |
| Limit of detection, g/kg | 0.0596 | 0.0276 | 0.0729 |
1All slopes differ P ≤ 0.001.
2All intercepts differ P ≤ 0.001.
