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Concentrations (ng/L) of the sum of free and conjugated E1, αE2, βE2, and E3 in bovine milk collected at different trimesters of pregnancy from lactating cows (95)
| Hormone | Trimester of gestation | ||
|---|---|---|---|
| first | second | third | |
| E1 | 7.9 ± 0.7 | 452 ± 66 | 1266 ± 38 |
| αE2 | 33 ± 7 | 84 ± 4 | 322 ± 35 |
| βE2 | 18.6 ± 0.2 | 51.4 ± 2.7 | 51.2 ± 1.5 |
| E3 | <LOD | <LOD | <LOD |
<LOD, lower than limit of detection level
