Table 10.
The composition of supplemented vitamin and trace minerals in boar 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) | 99 | 7,071 | 1.77 | 1.77 | 2,570.465 | 1,300 | 5,500 | 6,650 | 8,800 | 14,000 |
| Vitamin D (IU) | 99 | 2,500 | 12.5 | 11.4 | 841.848 | 150 | 2,000 | 2,600 | 3,075 | 4,000 |
| Vitamin E (IU) | 99 | 49.9 | 1.13 | 1.11 | 36.291 | 3.00 | 24.0 | 48.0 | 60.0 | 240 |
| Vitamin K (mg) | 87 | 3.08 | 6.16 | 6.16 | 1.800 | 0.45 | 2.00 | 2.50 | 3.80 | 10.4 |
| Thiamine (mg) | 60 | 1.45 | 1.45 | 1.45 | 0.624 | 0.40 | 1.00 | 1.42 | 1.78 | 3.00 |
| Riboflavin (mg) | 90 | 4.66 | 1.24 | 1.33 | 1.697 | 1.60 | 3.85 | 4.80 | 6.00 | 8.00 |
| Vitamin B6 (mg) | 73 | 2.25 | 2.25 | 2.25 | 1.178 | 0.54 | 1.16 | 2.34 | 3.19 | 5.00 |
| Vitamin B12 (μg) | 41 | 17.0 | 1.13 | 1.13 | 6.128 | 5.00 | 13.6 | 20.0 | 20.0 | 28.0 |
| Pantothenic acid (mg) | 73 | 19.0 | 1.59 | 1.59 | 8.459 | 7.20 | 13.0 | 16.0 | 27.2 | 45.0 |
| Niacin (mg) | 77 | 21.4 | 2.14 | 2.14 | 7.579 | 3.60 | 15.6 | 20.8 | 28.0 | 35.0 |
| Folic acid (mg) | 41 | 2.94 | 2.26 | 2.26 | 4.666 | 0.22 | 0.64 | 1.28 | 5.00 | 28.8 |
| Biotin (mg) | 39 | 0.30 | 1.51 | 1.51 | 0.182 | 0.04 | 0.20 | 0.26 | 0.40 | 0.80 |
| Choline (mg) | 30 | 401 | 0.32 | 0.32 | 130.690 | 200 | 280 | 400 | 485 | 700 |
| Trace minerals (mg/kg) | ||||||||||
| Copper | 99 | 15.8 | 3.15 | 3.15 | 3.304 | 3.00 | 13.8 | 16.0 | 17.5 | 27.0 |
| Iron | 99 | 237 | 2.96 | 2.96 | 143.529 | 0.13 | 120 | 210 | 387 | 760 |
| Manganese | 98 | 61.7 | 3.09 | 3.09 | 26.134 | 0.03 | 40.0 | 62.0 | 80.0 | 160 |
| Zinc | 97 | 68.5 | 1.37 | 0.91 | 22.688 | 30.0 | 57.0 | 64.0 | 70.0 | 220 |
| Selenium | 65 | 0.39 | 1.30 | 2.61 | 0.660 | 0.10 | 0.26 | 0.32 | 0.37 | 1.35 |
| Iodine | 64 | 1.23 | 8.78 | 8.19 | 1.479 | 0.10 | 0.38 | 0.56 | 1.11 | 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].