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% | 50% | 70% | ||||
| Initial BW, kg | 33.94 | 33.78 | 33.81 | 33.81 | 0.49 | 0.992 |
| Final BW, kg | 79.53 | 80.73 | 77.34 | 80.00 | 3.96 | 0.843 |
| ADG, kg/d | 0.76 | 0.75 | 0.78 | 0.82 | 0.05 | 0.614 |
| ADFI, kg/d | 2.01 | 1.92 | 1.93 | 2.04 | 0.13 | 0.832 |
| F/G | 2.64 | 2.56 | 2.49 | 2.48 | 0.07 | 0.168 |
| Carcass weight, kg | 27.82 | 30.26 | 34.24 | 35.22 | 1.25 | 0.098 |
| Loin eye muscle area, cm2 | 27.82 | 30.26 | 35.22 | 37.00 | 1.53 | 0.097 |
| Average back-fat thickness, mm | 14.12 | 13.77 | 9.44 | 8.08 | 1.10 | 0.070 |
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.