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Effects of cortisol on GnRH and LH pulses in artificial follicular phase
| Treatment | Frequency (pulses/8 h) | Amplitudea |
|---|---|---|
| GnRH | ||
| Vehicle | 5.0 ± 1.2 | 0.50 ± 0.1 |
| Cortisol | 1.6 ± 0.6b | 0.86 ± 0.2 |
| LH | ||
| Vehicle | 6.3 ± 0.9 | 1.0 ± 0.2 |
| Cortisol | 2.8 ± 0.9b | 1.1 ± 0.2 |
Values are mean ± sem for 10 vehicle and eight cortisol-treated ewes.
Amplitude expressed as pg/min for GnRH and ng/ml for LH.
Treatment effect (vehicle vs. cortisol; P < 0.05).
