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Concentrations (in μg/kg) of the antimicrobial residues in 118 colostrum samples
| Antimicrobial residue | Number of samples | Concentration (μg/kg), median (mean) | MRL (μg/kg) | Samples above MRL (% of total) |
|---|---|---|---|---|
| Cloxacillin | 48 | 86.5 (229.8) | 30 | 34 (29%) |
| Neomycin | 25 | 250 (297.6) | 1500 | 0 (0%) |
| Ampicillin | 8 | 3.9 (25.5) | 4 | 3 (3%) |
| Penicillin | 4 | 2.7 (26.8) | 4 | 1 (1%) |
| Cefalexin | 1 | 5 (5) | 100 | 0 (0%) |
| Streptomycin | 1 | 118 (118) | 200 | 0 (0%) |
