Table1. Effects of the different treatments on each variable (Experiment I; N=232).
| Treatment | 2PGG | 2PGGe | 2PGe | PGe | Total |
| N (%) | N (%) | N (%) | N (%) | N (%) | |
| Dependent variable* | |||||
| CY | 32/58 (55.2) | 34/57 (59.6) | 44/61 (72.1) | 38/56 (70.4) | 148/232 (63.8) |
| OF | 3/58 (5.2) | 6/57 (10.5) | 1/61 (1.6) | 2/56 (3.7) | 12/232 (5.2) |
| MO | 19/55 (34.5) | 15/51 (29.4) | 16/60 (29.4) | 12/54 (22.2) | 62/220 (28.2) |
| CR | 15/58 (25.9) | 16/57 (28.1) | 17/61 (27.9) | 18/56 (32.1) | 66/232 (28.4) |
| TW | 0/15 (0) | 3/16 (18.8) | 4/17 (23.5) | 3/18 (16.7) | 10/66 (15.2) |
| PL | 1/15 (6.7) | 1/16 (6.3) | 1/17 (5.9) | 2/18 (11.1) | 5/66 (7.6) |
* Values for each variable were not different according to Tukey-Kramer tests (P<0.05). Dependent variables: CY, cyclicity at treatment; LF, luteolysis failure at AI; OF, ovulation failure determined 10 days after AI; MO, multiple ovulation determined in ovulating cows 10 days after AI; CR, conception rate 28–34 days post AI; TW: twin pregnancy; PL: pregnancy loss 58–64 days post AI. Treatments (all cows received FTAI and a dose of GnRH 60 h after PRID removal): 2PGG: PRID for 5 days; GnRH on day 0; PGF2α at PRID removal and 24 h later. 2PGGe: PRID for 5 days; GnRH on day 0; PGF2α plus eCG at PRID removal and PGF2α 24 h later. 2PGE: PRID for 5 days; PGF2α plus eCG at PRID removal and PGF2α 24 h later. PGE: PRID for 5 days; PGF2α plus eCG at PRID removal.