Table 1 Most common estrus signs observed by dairy owners and approximate time to insemination
Estrus sign | Overall (n = 62) | Manually examined (n = 29) | Ultrasound examined (n = 33) | Pregnant (n = 18) | Non-pregnant (n = 44) |
|---|---|---|---|---|---|
Bellowing [%] | 60.0 | 51.7 | 54.5 | 61.1 | 59.5 |
Mounting others [%] | 66.7 | 48.3 | 69.7 | 77.8 | 64.2 |
Mucus vaginal discharge [%] | 83.3 | 79.3 | 87.9 | 88.9 | 83.3 |
Estrus to AI [hrs] | 13.3 ± 9.3 | 13.4 ± 9.7 | 12.1 ± 9.6 | 8.5 | 15.10 |