Table 5.
Levels (mg/kg) of polyether ionophores in carry-over samples (turkey and broiler feed) from pelletizer and mixer lines analysed by both LC-MSMS and LC-UV.
| Feed | Tonnes of feed | Monensin | Salinomycin | Narasin | |||
|---|---|---|---|---|---|---|---|
| LC-MSMS | LC-UV | LC-MSMS | LC-UV | LC-MSMS | LC-UV | ||
| Turkey A | 0.6 | 29 | 17 | <0.025 | n.d. | 1.9 | n.d. |
| pelletizer | 1.0 | 17 | 11 | <0.025 | n.d. | 1.2 | n.d. |
| line | 2.0 | 8.0 | 6.9 | <0.025 | n.d. | 0.74 | n.d. |
|
| |||||||
| Turkey B | 0.6 | 39 | 36 | n.d. | n.d. | 1.3 | n.d. |
| pelletizer | 1.0 | 18 | 16 | n.d. | n.d. | 0.60 | n.d. |
| line | 2.0 | 16 | 16 | n.d. | n.d. | 0.52 | n.d. |
|
| |||||||
| Turkey C | 0.8 | 0.60 | n.d. | n.d. | n.d. | 0.16 | n.d. |
| mixer | 2.0 | 0.73 | n.d. | n.d. | n.d. | 0.14 | n.d. |
| line | 3.2 | 0.58 | n.d. | n.d. | n.d. | 0.16 | n.d. |
|
| |||||||
| Turkey D | 0.8 | 5.3 | 4.3 | n.d. | n.d. | 0.35 | n.d. |
| mixer | 2.0 | 6.0 | <4.0 | n.d. | n.d. | 0.24 | n.d. |
| line | 3.2 | 2.4 | <4.0 | n.d. | n.d. | 0.28 | n.d. |
|
| |||||||
| Broiler A | 0.6 | 3.6 | <4.0 | n.d. | n.d. | 70 | 39 |
| pelletizer | 1.0 | 3.6 | 4.3 | n.d. | n.d. | 51 | 32 |
| line | 2.0 | 3.3 | 4.1 | n.d. | n.d. | 16 | 14 |
|
| |||||||
| Broiler B | 0.6 | 0.070 | n.d. | 0.027 | n.d. | 47 | 30 |
| pelletizer | 1.0 | 0.066 | n.d. | <0.025 | n.d. | 33 | 20 |
| line | 2.0 | 0.031 | n.d. | <0.025 | n.d. | 17 | 8.3 |
|
| |||||||
| Broiler C | 0.8 | <0.025 | n.d. | <0.025 | n.d. | 6.0 | 4.0 |
| mixer | 2.0 | <0.025 | n.d. | <0.025 | n.d. | 0.54 | n.d. |
| line | 3.2 | <0.025 | n.d. | <0.025 | n.d. | 0.094 | n.d. |
|
| |||||||
| Broiler D | 0.8 | 0.35 | n.d. | n.d. | n.d. | 1.9 | <5.0 |
| mixer | 2.0 | 0.33 | <4.0 | n.d. | n.d. | 2.1 | n.d. |
| line | 3.2 | 0.27 | n.d. | n.d. | n.d. | 1.5 | n.d. |
n.d.: not detected
Lasalocid, maduramicin, and semduramicin were not detected with LC-MS/MS. Lasalocid, maduramicin, and semduramicin were not measured with LC-UV.