Table 1.
Influence of an injectable trace mineral supplementation on heifer mineral status
| Treatment1 | SEM | P-value | ||
|---|---|---|---|---|
| Item | Control | MM | ||
| Plasma mineral | ||||
| Initial2 | ||||
| Cu, mg/L | 0.80 | 0.80 | – | – |
| Mn, µg/L | 1.64 | 2.33 | – | – |
| Se, µg/L | 57.1 | 60.5 | – | – |
| Zn, mg/L | 0.95 | 0.98 | – | – |
| Breeding3 | ||||
| Cu, mg/L | 0.71 | 0.85 | 0.037 | 0.01 |
| Mn, µg/L | 1.64 | 1.73 | 0.100 | 0.54 |
| Se, µg/L | 65.8 | 75.1 | 1.42 | <0.01 |
| Zn, mg/L | 0.94 | 0.93 | 0.037 | 0.94 |
| Liver mineral, mg/kg | ||||
| Initial2 | ||||
| Cu | 167.3 | 221.5 | – | – |
| Mn | 11.02 | 11.53 | – | – |
| Se | 0.70 | 0.63 | – | – |
| Zn | 115.9 | 113.8 | – | – |
| Breeding3 | ||||
| Cu | 108.0 | 175.8 | 10.06 | <0.01 |
| Mn | 9.85 | 9.98 | 0.167 | 0.60 |
| Se | 0.98 | 1.53 | 0.143 | <0.01 |
| Zn | 110.5 | 103.8 | 1.91 | 0.02 |
1Control cattle received a sterilized saline solution, and Multimin 90 (MM) cattle received injectable trace mineral at approximately 90-d intervals.
2Initial values served as covariates in analysis for respective parameters at subsequent sampling dates.
3Values determined at day 0 were used as a covariate in the analysis of trace mineral status at breeding.