Table 2.
Composition of repletion period dietary supplemental trace minerals (ITM1 vs. BLEND2 vs. ING3) applied within 2 depletion period diets (CON4 vs. ANT 5) fed to feedlot steers
| Mineral, mg/kg DM | ITM | BLEND | ING |
|---|---|---|---|
| Co6 | 0.15 | 0.15 | 0.15 |
| I7 | 0.5 | 0.5 | 0.5 |
| Cu (CuSO4) | 10 | 11.25 | 15 |
| Mn (MnSO4) | 20 | 22.5 | 30 |
| Se (Na2SeO3) | 0.1 | 0.1125 | 0.15 |
| Zn (ZnSO4) | 30 | 33.75 | 45 |
| Cu (Availa – Cu) | - | 3.75 | - |
| Mn (Availa – Mn) | - | 7.5 | - |
| Se (Selplex – Se) | - | 0 .0375 | - |
| Zn (Availa – Zn) | - | 11.25 | - |
| Analyzed composition8 | |||
| Cu, mg/kg DM | 14.6 | 20.4 | 19.2 |
| Mn, mg/kg DM | 37.5 | 48.1 | 47.0 |
| Zn, mg/kg DM | 62.8 | 72.6 | 69.1 |
1ITM: Injectable trace mineral treatment supplemented inorganic forms of trace minerals at 100% of concentrations recommended by NASEM (2016).
2BLEND: Trace minerals supplemented at 150% of concentrations recommended by NASEM (2016) from 25% organic and 75% inorganic sources.
3ING: Trace minerals supplemented at 150% of concentrations recommended by NASEM (2016) from entirely inorganic sources.
4Control diet contained no supplemental Mo or S.
5Antagonist diet provided supplemental dietary minerals: 2 mg Mo/kg DM, and 0.3% S as CaSO4.
6Cobalt supplemented as Co carbonate.
7Iodine supplemented as ethylenediamine dihydroiodide.
8Analysis of TMR from repletion period.