Table 6.
Serum estrogen concentration (Mean ± SEM, pg/mL) and magnitude of response (expressed as a ratio between serum estrogen 2 h (T2) after treatment and basal estrogen T0) to hCG administration in different age group alpacas.
| Age group | N | % with detectable estrogen level | Estrogen at T0 | Estrogen at 2 h | Ratio E2/E0 |
|---|---|---|---|---|---|
| 6–8 | 13 | 0 | 0 | 0 | – |
| 9–11 | 6 | 0 | 0 | 0 | – |
| 13–14 | 10 | 10 | 0.1 | 0.49 | 4.86 |
| 15–16 | 13 | 23.1 | 0.25 ± 0.13a | 0.3 ±0.16a | 1.12 ± 1.23a |
| 17–20 | 6 | 33.3 | 1.3 ± 0.83a | 3.62 ± 0.35a | 2.97 ± 1.23a |
| 22–30 | 5 | 100 | 1.45 ± 0.25a,1 | 2.6 ± 0.34a,2 | 1.99 ± 0.40a |
| >36 | 7 | 100 | 3.32 ± 0.58b,1 | 5.59 ± 0.44b,2 | 1.91± 0.27a |
a,b,c
Values with different subscripts within the same column are statistically different (p < 0.05).
1,2
Values with different subscripts within the same column are statistically different (p < 0.05).