Table 2.
The composition of supplemented vitamins and trace minerals in early nursery diets (8 to 15 kg)
| Item1) | N | Average | Ratio to NRC2) | Ratio to CHN3) | SD | Minimum | The 25th percentile | Median | The 75th percentile | Maximum |
|---|---|---|---|---|---|---|---|---|---|---|
| Vitamins (unit/kg) | ||||||||||
| Vitamin A (IU) | 312 | 10,186 | 4.63 | 5.66 | 3,124.882 | 700 | 8,750 | 10,000 | 11,750 | 31,850 |
| Vitamin D (IU) | 303 | 2,828 | 12.9 | 14.1 | 1,239.169 | 150 | 2,200 | 2,900 | 3,200 | 10,000 |
| Vitamin E (IU) | 310 | 33.9 | 2.12 | 3.08 | 31.953 | 0.40 | 15.2 | 22.0 | 41.0 | 240 |
| Vitamin K (mg) | 263 | 3.46 | 6.91 | 6.91 | 6.402 | 0.03 | 2.00 | 2.75 | 3.75 | 84.0 |
| Thiamine (mg) | 194 | 2.67 | 2.67 | 2.67 | 4.803 | 0.04 | 1.20 | 2.00 | 3.19 | 48.0 |
| Riboflavin (mg) | 273 | 5.80 | 1.66 | 1.66 | 3.777 | 0.04 | 4.00 | 4.80 | 7.20 | 40.0 |
| Vitamin B6 (mg) | 224 | 2.91 | 0.42 | 1.94 | 2.317 | 0.02 | 1.50 | 2.30 | 4.00 | 20.0 |
| Vitamin B12 (μg) | 140 | 106 | 6.08 | 6.08 | 628.468 | 1.50 | 18.3 | 29.9 | 38.4 | 6,000 |
| Pantothenic acid (mg) | 236 | 19.3 | 1.93 | 1.93 | 11.839 | 0.18 | 10.5 | 16.0 | 24.9 | 100.0 |
| Niacin (mg) | 218 | 26.4 | 0.88 | 1.76 | 14.766 | 0.20 | 17.2 | 25.0 | 36.0 | 120 |
| Folic acid (mg) | 123 | 2.38 | 7.95 | 7.95 | 6.099 | 0.03 | 0.58 | 0.90 | 1.80 | 40.0 |
| Biotin (mg) | 130 | 0.19 | 3.73 | 3.73 | 0.106 | 0.01 | 0.11 | 0.18 | 0.25 | 0.80 |
| Choline (mg) | 70 | 343 | 0.69 | 0.69 | 244.121 | 60.0 | 240 | 300 | 399 | 2,000 |
| Trace minerals (mg/kg) | ||||||||||
| Copper | 278 | 76.6 | 12.8 | 12.8 | 31.900 | 3.00 | 64.7 | 77.5 | 92.5 | 313 |
| Iron | 290 | 244 | 2.44 | 2.32 | 155.763 | 0.13 | 130 | 200 | 371 | 1,270 |
| Manganese | 285 | 62.6 | 15.7 | 15.7 | 27.680 | 0.03 | 40.0 | 64.0 | 80.0 | 200 |
| Zinc | 286 | 534 | 5.34 | 4.86 | 494.257 | 0.12 | 80.0 | 133.3 | 913 | 1,980 |
| Selenium | 164 | 0.37 | 1.23 | 1.23 | 0.315 | 0.09 | 0.24 | 0.32 | 0.39 | 3.00 |
| Iodine | 159 | 1.25 | 8.91 | 8.91 | 1.410 | 0.10 | 0.40 | 0.60 | 1.28 | 5.20 |
The N represents the number of farms; SD, standard deviation.
1)
All reported values are on an as-fed basis and represent vitamins and trace minerals provided the following per kilogram of diet for pigs.
2)
Values represent average supplementation rates as a proportion to dietary vitamin and trace mineral requirements recommendation from the NRC [7].
3)
Values represent average supplementation rates as a proportion to dietary vitamin and trace mineral requirements recommendation from the China’s Feeding Standard of Swine [9].