Table 3.
Chemical analysis of diets (experiment 2; as-fed basis)a
| Item | Phase 1 | Phase 2 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Control | Added Cu, mg/kg | Control | Added Cu, mg/kg | |||||||||||
| TBCCb | Cu-chelatec | TBCCb | Cu-chelatec | |||||||||||
| 75 | 150 | 225 | 75 | 150 | 225 | 75 | 150 | 225 | 75 | 150 | 225 | |||
| Dry matter, % | 88.9 | 88.1 | 88.9 | 89.0 | 89.0 | 89.0 | 88.9 | 88.9 | 88.4 | 88.2 | 88.6 | 88.4 | 88.6 | 88.6 |
| Crude protein, % | 24.1 | 24.3 | 24.3 | 24.5 | 24.7 | 24.8 | 24.0 | 24.3 | 23.8 | 24.3 | 32.9 | 24.4 | 24.0 | 23.4 |
| Crude fiber, % | 2.5 | 2.5 | 2.4 | 2.5 | 2.8 | 2.7 | 2.6 | 2.6 | 3.0 | 2.7 | 2.6 | 2.5 | 2.5 | 2.3 |
| Ether extract, % | 6.0 | 6.7 | 6.4 | 7.2 | 6.9 | 6.8 | 7.3 | 7.3 | 7.1 | 7.0 | 7.0 | 7.3 | 7.1 | 6.6 |
| Ash, % | 6.6 | 6.6 | 6.6 | 6.8 | 6.5 | 6.4 | 6.4 | 5.9 | 6.1 | 6.0 | 7.2 | 5.7 | 5.7 | 5.3 |
| Ca, % | 1.06 | 0.97 | 1.01 | 1.01 | 0.94 | 0.95 | 1.03 | 1.02 | 0.93 | 0.93 | 1.01 | 0.93 | 0.99 | 0.93 |
| P, % | 0.86 | 0.85 | 0.84 | 0.89 | 0.84 | 0.88 | 0.88 | 0.82 | 0.81 | 0.82 | 0.84 | 0.79 | 0.84 | 0.76 |
| Cu, mg/kg | 24 | 86 | 179 | 248 | 134 | 227 | 316 | 28 | 90 | 144 | 246 | 114 | 177 | 283 |
a For each group of pigs, multiple samples of each diet were collected, blended and subsampled, and analyzed (Cumberland Valley Analytical Services, Hagerstown, MD and Ward Laboratories, Kearney, NE). All values represent the combined average of the chemical analyses of diets for the experiment.
b Tri-basic copper chloride (IntelliBond C, Micronutrients).
c Copper-methionine hydroxy analogue (Mintrex Cu, Novus International).