Table 4 Summary of correlations between the ewe-related characteristics and estradiol/progesterone concentrations/ratios at 24 h prior to transcervical embryo transfer (TCET) and at the time of TCET with the total time taken to perform the procedure (TT) and the time of the final attempt (FT) (the latter for penetrated ewes only) determined in 22 Rideau Arcott x Polled Dorset ewes
From: Induction of cervical dilation for transcervical embryo transfer in ewes
Variable/Outcomes | Total time (sec) | Total time (sec) | Time of the last attempt (sec) |
|---|---|---|---|
(All ewes, n = 22) | (Penetrated ewes only, n = 7) | (Penetrated ewes only, n = 7) | |
Age (days) | r = −0.26, p = 0.25 | r = −0.21, p = 0.29 | r = −0.59, p < 0.05 |
Weight (kg) | r = 0.0007, p = 0.98 | r = 0.01, p = 0.96 | r = 0.02, p = 0.95 |
Breed (% Rideau Arcott) | r = −0.16, p = 0.49 | r = −0.02, p = 0.93 | r = −0.11, p = 0.71 |
Parity | r = −0.12, p = 0.56 | r = −0.12, p = 0.56 | r = −0.52, p = 0.05 |
Lifetime lamb production | r = −0.07, p = 0.76 | r = 0.05, p = 0.81 | r = −0.59, p < 0.05 |
Post-partum interval (days) | r = −0.27, p = 0.23 | r = −0.35, p = 0.08 | r = −0.60, p < 0.05 |
E 2 – 24 h prior (pg/ml) | r = −0.31, p = 0.18 | r = −0.22, p = 0.29 | r = −0.31, p = 0.28 |
E 2 – 12 h prior (pg/ml) | r = −0.03, p = 0.90 | r = −0.07, p = 0.72 | r = −0.36, p = 0.20 |
E 2 – TCET (pg/ml) | r = 0.08, p = 0.72 | r = 0.02, p = 0.93 | r = −0.16, p = 0.59 |
P 4 – 24 h prior (ng/ml) | r = −0.16, p = 0.51 | r = −0.22, p = 0.30 | r = 0.19, p = 0.51 |
P 4 – 12 h prior (ng/ml) | r = −0.15, p = 0.51 | r = −0.15, p = 0.45 | r = 0.44, p = 0.11 |
P 4 – TCET (ng/ml) | r = −0.31, p = 0.16 | r = −0.34, p = 0.08 | r = 0.22, p = 0.45 |
E 2 : P 4 – 24 h prior | r = −0.12, p = 0.61 | r = −0.04, p = 0.84 | r = −0.39, p = 0.16 |
E 2 : P 4 – 12 h prior | r = 0.06, p = 0.79 | r = 0.04, p = 0.84 | r = −0.52, p = 0.06 |
E 2 : P 4 – TCET | r = 0.22, p = 0.31 | r = 0.21, p = 0.29 | r = −0.40, p = 0.15 |