Table 3.
Effects of Mn level and dietary source on performance of broilers one to 20 d of age, bone quality, and liver Mn concentration in 20-day-old broilers.
| Source | Level Mn (mg/kg) | Weight gain (g) | Feed intake (g) | Feed conversion (kg:kg) | Bone resistence (kgf) | Mn in tibia (mg/kg) | Mn in liver (mg/kg) |
|---|---|---|---|---|---|---|---|
| Control | 0 | 874.0 | 1,059.0 | 1.21 | 13.54 | 4.52 | 30.93 |
| MnProt | 35 | 833.0 | 1,026.0 | 1.23 | 14.55 | 6.48 | 63.75 |
| 70 | 862.0 | 1,063.0 | 1.22 | 16.49 | 6.87 | 68.95 | |
| 105 | 837.0 | 1,042.0 | 1.24 | 17.66 | 7.45 | 76.03 | |
| 140 | 854.0 | 1,052.0 | 1.23 | 17.07 | 7.78 | 82.53 | |
| MnSO4 | 35 | 878.0 | 1,055.0 | 1.21 | 15.14 | 5.92 | 57.40 |
| 70 | 872.0 | 1,061.0 | 1.22 | 16.07 | 6.62 | 62.65 | |
| 105 | 861.0 | 1,045.0 | 1.22 | 17.01 | 7.25 | 70.00 | |
| 140 | 853.0 | 1,025.0 | 1.21 | 16.90 | 7.72 | 74.95 | |
| SEM | 3.63 | 4.19 | 0.002 | 0.36 | 0.16 | 2.75 | |
| P value1 | 0.109 | 0.371 | 0.088 | 0.008 | <0.001 | <0.001 |
1
Control vs. mean of treatments with Mn supplementation (t test; P < 0.05). Contrast testing was done.