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Table 2 The cervical penetrability, total time taken to perform the procedure (TT), time of the final attempt (FT) and estradiol/progesterone (E 2 : P 4 ) concentrations/ratios for the Cervidil®-treated cyclic Rideau Arcott x Polled Dorset ewes and their respective controls

From: Induction of cervical dilation for transcervical embryo transfer in ewes

Variable/Group Treatment Control
  12-h (n = 5) 24-h (n = 6) 12-h (n = 6) 24-h (n = 5)
Cervical penetrability 2/5 (40%) 4/6 (67%)* 1/6 (16%) 0/5 (0%)*
TT (sec) 168 ± 22 110 ± 29 170 ± 28 180 ± 26
FT (sec) 38 ± 23 27 ± 5 154 -
E 2 – 24 h prior (pg/ml) 2.4 ± 0.4† 1.8 ± 0.4 2.9 ± 0.4† 1.5 ± 0.2
E 2 – 12 h prior (pg/ml) 1.9 ± 0.3 1.7 ± 0.4 2.6 ± 0.5 1.6 ± 0.5
E 2 – TCET (pg/ml) 1.7 ± 0.3† 1.7 ± 0.4 1.9 ± 0.5† 1.2 ± 0.2
P 4 – 24 h prior (ng/ml) 3.4 ± 0.6 2.6 ± 0.4§ 2.7 ± 0.3§‡ 2.9 ± 0.6
P 4 – 12 h prior (ng/ml) 3.8 ± 0.4 4.0 ± 0.7 3.5 ± 0.5§ 3.4 ± 0.6
P 4 – TCET (ng/ml) 4.1 ± 0.5 3.8 ± 0.6§ 3.7 ± 0.6‡ 3.6 ± 0.4
E 2 : P 4 – 24 h prior 0.9 ± 0.3‡ 0.8 ± 0.3 0.9 ± 0.2• 0.6 ± 0.1
E 2 : P 4 – 12 h prior 0.5 ± 0.1 0.5 ± 0.07 0.8 ± 0.3 0.6 ± 0.3
E 2 : P 4 – TCET 0.4 ± 0.08‡ 0.5 ± 0.2 0.6 ± 0.2• 0.4 ± 0.07
  1. Due to low numbers of penetrated control ewes, there are no comparisons of FT between the treatment and control groups.
  2. A significant difference (p < 0.05) exists between the two values denoted by the same symbols: *within rows; †§‡• within columns.