Table 1.
Mycotoxin levels in feeds from dairy farms in the Gauteng province. Data showing the affiliated method LODs and LOQs per analyte.
| Concentration of Positive Feedstuff Samples (ppb) N = 40 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Detected Analyte | n (pos) | Incidence (%) | >LOQ (%) | Min (ppb) | Max (ppb) | Mean (ppb) | LOD (ppb) | LOQ (ppb) |
| AFB1 | 19 | 47.5 | 57.9 | <LOQ | 3.33 | 0.74 | 0.02 | 0.06 |
| AFB2 | 37 | 92.5 | 97.3 | <LOQ | 23.88 | 3.06 | 0.05 | 0.16 |
| AFG1 | 22 | 55.0 | 72.7 | <LOQ | 19.96 | 2.55 | 0.05 | 0.15 |
| AFG2 | 40 | 100.0 | 97.5 | <LOQ | 116.04 | 41.27 | 0.06 | 0.19 |
| α-ZEL | 40 | 100.0 | 100.0 | 0.975 | 13.24 | 4.84 | 0.19 | 0.63 |
| β-ZEL | 40 | 100.0 | 100.0 | 0.727 | 4.71 | 2.40 | 0.19 | 0.64 |
| ZEN | 24 | 60.0 | 87.5 | <LOQ | 28.04 | 2.84 | 0.04 | 0.12 |
| FB1 | 34 | 85.0 | 64.7 | <LOQ | 1389.62 | 372.96 | 3.46 | 11.52 |
| ADONs | 12 | 30.0 | 75.0 | <LOQ | 9.51 | 2.20 | 0.08 | 0.27 |
| BEA | 36 | 90.0 | 50.0 | <LOQ | 55.99 | 8.81 | 0.66 | 2.19 |
| DON | 24 | 60.0 | 83.3 | <LOQ | 81.61 | 20.40 | 0.49 | 1.62 |
| HT-2 | 35 | 87.5 | 94.3 | <LOQ | 312.95 | 35.11 | 0.06 | 0.21 |
| OTA | 0 | 0 | ND | ND | ND | ND | 0.08 | 0.26 |
| CIT | 0 | 0 | ND | ND | ND | ND | 0.13 | 0.42 |
n pos: number positive samples (number of samples above LOD); % (>LOQ): percentage of quantifiable positive samples (percentage above LOQ); LOD: limit of detection; LOQ: limit of quantification; ND: not detected. AFB1 (Aflatoxin B1), AFB2 (Aflatoxin B2), AFG1 (Aflatoxin G1), AFG2 (Aflatoxin G2), α-ZEL (α-zearalenol), β-ZEL (β-zearalenol), ZEN (Zearalenone), FB1 (Fumonisin B1), ADONs (Acetyldeoxynivalenols), BEA (Beauvericin), DON (Deoxynivalenol), HT-2 (HT-2 toxin), OTA (Ochratoxin A), CIT (Citrinin).