Table 4.
Effects of the dietary replacement of inorganic trace minerals with lower levels of organic trace minerals on the growth performance and carcass traits of growing-finishing pigs.
| Items | 100% ITMs | OTMs | SEM | P-value | ||
|---|---|---|---|---|---|---|
| 30% | 45% | 60% | ||||
| Initial BW, kg | 74.28 | 74.25 | 74.22 | 74.25 | 0.117 | 0.999 |
| Final BW, kg | 109.54 | 110.81 | 110.21 | 109.96 | 0.502 | 0.860 |
| ADG, kg/d | 0.97 | 0.96 | 0.96 | 0.97 | 0.012 | 0.991 |
| ADFI, kg/d | 3.15 | 3.16 | 3.17 | 3.16 | 0.025 | 0.998 |
| F/G | 3.27 | 3.29 | 3.30 | 3.25 | 0.038 | 0.980 |
| Carcass weight, kg | 82.62 | 81.74 | 80.60 | 81.32 | 0.658 | 0.766 |
| Dressing percentage, % | 75.34 | 75.17 | 75.65 | 74.94 | 0.550 | 0.979 |
| Loin eye muscle area, cm2 | 57.28 | 62.61 | 63.62 | 58.10 | 1.678 | 0.463 |
| Average back-fat thickness, mm | 23.54 | 21.50 | 23.40 | 22.36 | 0.658 | 0.701 |
| Leaf fat weight, kg | 1.07 | 0.99 | 1.06 | 1.07 | 0.497 | 0.914 |
Values are presented as mean and pooled SEM, n = 6.
Data in the same row with no or the same letter indicate no significant difference (P > 0.05), while with different letters mean significant difference (P < 0.05).
ITMs, inorganic trace minerals; OTMs, organic trace minerals; BW, body weight; ADG, average daily gain; ADFI, average daily feed intake; F/G, feed-to-gain ratio.