Table 2.
Least square means (SE) for early embryonic loss, late embryonic loss, foetal loss and total pregnancy loss for Swedish Red (SR) and Swedish Holstein (SH) cows
| Effect | Total nobs | Early embryonic loss (%) | Late embryonic loss (%) | Foetal loss (%) | Total pregnancy loss (%) |
|---|---|---|---|---|---|
| Breed | |||||
| SR | 1343 | 29.1 (2.72) | 13.5 (1.98) | 12.4 (1.66) | 62.4 (2.85)a |
| SH | 786 | 28.8 (2.92) | 15.2 (2.10) | 13.7 (1.76) | 67.9 (3.02)b |
| Parity | |||||
| 1 | 893 | 30.5 (3.04) | 14.5 (2.04) | 11.8 (1.68)a | 58.7 (2.94)a |
| 2 | 620 | 28.0 (3.119) | 13.7 (2.22) | 11.9 (1.82)a | 64.1 (3.20)b |
| ≥ 3 | 616 | 28.4 (3.21) | 14.9 (2.22) | 15.4 (1.84)b | 72.6 (3.18)c |
| Calving interval (months) | |||||
| 12 | 1390 | 30.8 (2.56) | 13.4 (1.86) | 14.9 (1.56)a | 66.3 (2.68) |
| 15 | 739 | 27.2 (3.12) | 15.2 (2.27) | 11.2 (1.90)b | 64.0 (3.26) |
| Ovulation number | |||||
| 1 | 70 | 34.8 (6.16)ab | 12.3 (4.40) | 16.2 (3.53)ab | 67.7 (6.36) |
| 2 | 370 | 32.1 (3.30)a | 15.7 (2.42) | 10.5 (1.98)a | 67.1 (3.50) |
| 3 | 524 | 27.7 (2.98)ab | 15.7 (2.19) | 11.0 (1.80)a | 64.3 (3.15) |
| 4 | 439 | 26.9 (3.03)ab | 14.5 (2.23) | 12.9 (1.82)ab | 63.1 (3.20) |
| ≥ 5 | 726 | 23.3 (2.62)b | 13.6 (1.91) | 14.6 (1.59)b | 63.6 (2.74) |
| Housing | |||||
| Tie-stall | 911 | 30.5 (2.15) | 12.6 (1.50) | 9.4 (1.26) | 62.1 (2.16) |
| Loose-housed | 1130 | 28.5 (1.95) | 13.0 (1.38) | 8.0 (1.16) | 60.3 (1.99) |
| Insemination season | |||||
| January–April | 1022 | 30.5 (2.68)a | 14.0 (1.95) | 10.3 (1.61)a | 64.6 (2.81) |
| May–September | 532 | 25.0 (3.12)b | 14.6 (2.24) | 17.4 (1.85)b | 68.4 (3.23) |
| October–December | 575 | 31.3 (3.28)a | 14.5 (2.38) | 11.4 (1.97)a | 62.5 (3.42) |
a–cMeans within effect and column with different superscript are significantly different P ≤ 0.05