Table 7.
The composition of supplemented vitamins and trace minerals in gilt-development diets
| 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) | 151 | 6,640 | 5.11 | 4.43 | 2,952.290 | 1,300 | 4,800 | 6,650 | 7,800 | 27,660 |
| Vitamin D (IU) | 151 | 2,512 | 16.7 | 14.8 | 1,494.768 | 150 | 1,900 | 2,600 | 3,000 | 17,750 |
| Vitamin E (IU) | 151 | 45.5 | 4.14 | 4.14 | 38.031 | 2.50 | 20.0 | 42.0 | 50.0 | 240 |
| Vitamin K (mg) | 131 | 3.01 | 6.02 | 6.02 | 1.793 | 0.43 | 2.00 | 2.40 | 4.55 | 7.60 |
| Thiamine (mg) | 66 | 1.31 | 1.31 | 1.31 | 0.616 | 0.01 | 0.98 | 1.11 | 1.71 | 2.60 |
| Riboflavin (mg) | 132 | 4.55 | 1.82 | 1.82 | 1.945 | 1.80 | 3.00 | 4.32 | 5.49 | 10.0 |
| Vitamin B6 (mg) | 115 | 2.57 | 2.57 | 2.57 | 2.273 | 0.39 | 1.20 | 2.44 | 3.20 | 18.0 |
| Vitamin B12 (μg) | 46 | 14.7 | 1.47 | 1.33 | 6.856 | 5.00 | 8.30 | 16.0 | 20.0 | 31.5 |
| Pantothenic acid (mg) | 113 | 16.1 | 2.01 | 2.01 | 7.820 | 0.22 | 10.1 | 14.5 | 20.0 | 45.0 |
| Niacin (mg) | 96 | 22.6 | 0.75 | 2.26 | 10.951 | 2.00 | 14.6 | 22.0 | 31.5 | 50.0 |
| Folic acid (mg) | 49 | 2.34 | 7.80 | 7.80 | 4.117 | 0.06 | 0.32 | 0.75 | 3.75 | 27.0 |
| Biotin (mg) | 45 | 0.58 | 11.6 | 11.6 | 1.630 | 0.04 | 0.09 | 0.20 | 0.40 | 8.00 |
| Choline (mg) | 59 | 349 | 1.16 | 1.00 | 175.161 | 50.0 | 180 | 350 | 500 | 680 |
| Trace minerals (mg/kg) | ||||||||||
| Copper | 156 | 20.7 | 5.19 | 4.61 | 42.781 | 3.00 | 14.0 | 15.0 | 17.5 | 393 |
| Iron | 154 | 236 | 3.93 | 3.37 | 128.045 | 0.13 | 116 | 230 | 382 | 465 |
| Manganese | 152 | 64.8 | 32.4 | 21.6 | 24.034 | 0.04 | 41.3 | 69.0 | 85.0 | 103 |
| Zinc | 152 | 69.3 | 1.15 | 0.99 | 13.894 | 30.0 | 58.4 | 70.0 | 78.0 | 123 |
| Selenium | 107 | 0.36 | 1.79 | 1.20 | 0.263 | 0.10 | 0.24 | 0.30 | 0.35 | 1.50 |
| Iodine | 115 | 1.44 | 10.3 | 10.3 | 1.692 | 0.10 | 0.40 | 0.60 | 1.20 | 5.18 |
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].