Table 4.
Effects of dietary Zn source and concentration on tissue mineral contents in growing–furring mink1
| Tibia, mg/kg (DM basis) | Pancreas, mg/kg (DM basis) | Liver, mg/kg (DM basis) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Item | Zn | Cu | Fe | Zn | Cu | Fe | Zn | Cu | Fe |
| Added Zn source and concentration, mg/kg | |||||||||
| Control | |||||||||
| 0 | 142.6 | 10.2 | 84.2 | 81.9 | 8.4 | 75.6 | 43.5 | 23.8 | 330.5 |
| ZnSO4∙7H2O | |||||||||
| 100 | 157.8 | 10.7 | 84.7 | 90.9 | 8.1 | 72.3 | 75.9 | 20.0 | 301.8 |
| 300 | 173.6 | 10.1 | 84.1 | 95.6 | 8.3 | 70.6 | 75.8 | 15.9 | 277.2 |
| 900 | 174.8 | 8.6 | 83.6 | 108.4 | 6.5 | 62.3 | 81.2 | 19.2 | 298.0 |
| ZnGly2 | |||||||||
| 100 | 158.6 | 11.0 | 85.0 | 95.1 | 8.7 | 74.6 | 79.2 | 27.0 | 337.4 |
| 300 | 179.4 | 9.4 | 83.8 | 105.6 | 7.3 | 53.6 | 67.5 | 28.6 | 273.1 |
| 900 | 185.2 | 8.8 | 84.1 | 115.2 | 6.5 | 55.7 | 83.9 | 19.5 | 228.2 |
| ZnPOS3 | |||||||||
| 100 | 159.8 | 9.8 | 83.7 | 103.6 | 9.2 | 42.7 | 82.7 | 31.7 | 283.8 |
| 300 | 183.1 | 9.8 | 83.8 | 120.0 | 6.7 | 59.7 | 87.7 | 30.9 | 339.3 |
| 900 | 197.6 | 8.6 | 83.1 | 150.4 | 4.1 | 81.1 | 82.0 | 22.1 | 351.5 |
| SEM | 8.4 | 0.09 | 1.4 | 8.7 | 0.3 | 11.6 | 8.7 | 5.6 | 21.1 |
| Zn sources | |||||||||
| ZnSO4 | 168.9b | 9.7 | 84.1 | 98.8b | 7.6 | 68.1 | 77.3 | 18.3 | 291.9 |
| ZnGly | 174.4ab | 9.7 | 84.1 | 106.9ab | 7.3 | 59.3 | 77.9 | 24.4 | 276.6 |
| ZnPOS | 178.9a | 9.5 | 83.5 | 124.7a | 6.7 | 61.2 | 84.2 | 28.0 | 327.8 |
| SEM | 3.3 | 0.07 | 0.6 | 5.1 | 0.1 | 4.8 | 3.1 | 4.3 | 19.1 |
| Zn concentrations, mg/kg | |||||||||
| 100 | 158.8b | 10.5a | 84.4 | 97.9b | 8.7a | 60.6 | 79.0 | 25.8 | 309.4 |
| 300 | 179.5a | 9.7ab | 83.9 | 107.1ab | 7.4a | 61.4 | 77.7 | 24.9 | 298.2 |
| 900 | 185.0a | 8.6b | 83.4 | 124.7a | 5.7b | 66.4 | 82.5 | 20.3 | 287.9 |
| SEM | 3.3 | 0.07 | 0.6 | 5.1 | 0.1 | 4.8 | 3.1 | 4.3 | 19.1 |
| Linear | 0.04 | 0.06 | 0.20 | 0.03 | 0.02 | 0.16 | 0.12 | 0.71 | 0.44 |
| Quadratic | 0.35 | 0.18 | 0.18 | 0.78 | 0.01 | 0.29 | 0.53 | 0.52 | 0.78 |
| P-values | |||||||||
| Sources | 0.03 | 0.68 | 0.40 | 0.002 | 0.08 | 0.65 | 0.14 | 0.15 | 0.18 |
| Concentrations | 0.01 | 0.04 | 0.14 | 0.004 | 0.001 | 0.83 | 0.40 | 0.44 | 0.67 |
| Concentrations × source | 0.52 | 0.73 | 0.90 | 0.46 | 0.03 | 0.23 | 0.24 | 0.85 | 0.09 |
a,b
Means within a row with different superscripts differ (P < 0.05).
1
Data are expressed as least squares means with pooled SEM; n = 10 per treatment.
2
ZnGly = zinc glycinate.
3
ZnPOS = Zn pectin oligosaccharides.