Table 3.
Least square means (SE) for progesterone concentrations at the day of insemination (P4day0), day 10 (P4day10), day 21 (P4day21) and day 30 (P4day30) after AI for pregnant cows and cows subjected to pregnancy losses (non-pregnant) at days 1–24, 25–60 and 61-calving after AI for Swedish dairy cows
| Pregnancy loss at day | Progesterone concentration (ng/ml) (SE) | |||||||
|---|---|---|---|---|---|---|---|---|
| P4day0 | P4day10 | P4day21 | P4 day 30 | |||||
| Non-pregnant | Pregnant | Non-pregnant | Pregnant | Non-pregnant | Pregnant | Non-pregnant | Pregnant | |
| 1–24 | 2.37 (0.20) | 2.01 (0.16) | 16.90 (0.42)a | 19.97 (0.31)b | 10.43 (0.68)a | 27.90 (0.39)b | – | – | 
| 25–60 | 3.14 (0.28)a | 2.10 (0.19)b | 18.11 (0.57)a | 20.46 (0.32)b | 22.56 (0.78)a | 28.84 (0.42)b | 12.89 (1.37)a | 32.08 (1.03)b | 
| 61-calving | 2.56 (0.27)a | 1.42 (0.16)b | 21.18 (0.76) | 20.35 (0.36) | 25.94 (1.08)a | 29.22 (0.43)b | 27.74 (1.98)a | 32.22 (1.10)b | 
| 1-calving | 1.70 (0.16)a | 1.32 (0.19)b | 17.66 (0.39)a | 19.64 (0.47)b | 18.86 (0.60)a | 28.69 (0.67)b | 20.30 (0.86)a | 30.72 (0.97)b | 
a, bMeans within interval (days 1–24 after AI, days 25–60 after AI, day 61 after AI to calving, and 1 day after AI to calving) with different superscript are significantly different P ≤ 0.05