Table 1.
Formulated and analyzed composition1 of complete free-choice mineral supplements provided to cow–calf pairs from day −30 to day 67
| TRT2 | CNT3 | ||||
|---|---|---|---|---|---|
| Nutrient | Formulated | Analyzed | Formulated | Analyzed | Units, of DM |
| Ca | 15.25 | 16.65 | 15.25 | 16.65 | % |
| Na | 6.14 | 9.4 | 6.18 | 9.8 | % |
| P | 6.00 | 4.95 | 6.02 | 4.95 | % |
| Mg | 1.51 | 1.65 | 1.49 | 1.7 | % |
| S | 0.23 | 0.92 | 0.85 | 1.02 | % |
| K | 0.05 | 0.1 | 0.09 | 0.2 | % |
| Zn | 7,528 | 7,361 | 7,524 | 6,800 | mg/kg |
| Mn | 2,500 | 2,746.5 | 2,503 | 3,306.5 | mg/kg |
| Cu | 1,250 | 1,357 | 1,247 | 1,387 | mg/kg |
| Fe | 1,018 | 3,790.5 | 1,039 | 3,872.5 | mg/kg |
| Co | 125 | 163.5 | 127 | 135.5 | mg/kg |
| Se | 30 | 38.0 | 30 | 43.0 | mg/kg |
| Vitamin A | 442 | -- | 442 | -- | kIU/kg |
| Vitamin D | 44.3 | -- | 44.3 | -- | kIU/kg |
| Vitamin E | 2204 | -- | 2204 | -- | IU/kg |
Mineral composition determined using Inductively Coupled Plasma – Mass Spectrometry (ICP – MS).
TRT = treatment; cow–calf pairs were provided with ad libitum access to a weekly 1.16 kg of DM × cow–calf pair−1-allotment of a custom-formulated and contractually-manufactured complete free-choice mineral supplement that contained amino acid complexes of Zn, Cu, and Mn, as well as Co glucoheptonate.
CNT = control; cow–calf pairs were provided with ad libitum access to a weekly 1.16 kg of DM × cow–calf pair−1-allotment of a custom-formulated and contractually-manufactured complete free-choice mineral supplement that contained a similar level of Zn, Cu, Mn, and Co from inorganic sources.