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Table 3 A comparison of ewe-related parameters, and estradiol/progesterone concentrations/ratios (at 24 h prior to transcervical embryo transfer (TCET) and at the time of TCET) between the penetrated and non-penetrated Rideau Arcott x Polled Dorset ewes

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

Variable/Group

Penetrated (n = 7)

Non-penetrated (n = 15)

 

Treatment (n = 6)

Control (n = 1)

Treatment (n = 5)

Control (n = 10)

 

12-h (n = 2)

24-h (n = 4)

12-h (n = 1)

24-h (n = 0)

12-h (n = 3)

24-h (n = 2)

12-h (n = 5)

24-h (n = 5)

Age (days)

1524 ± 155

1391 ± 88

Weight (kg)

80.6 ± 3.1

80.0 ± 2.9

Breed (% Rideau Arcott)

58.1 ± 8.7

63.8 ± 4.1

Parity

2.3 ± 0.5

2.1 ± 0.3

Lifetime lamb production

5.0 ± 1.2

4.2 ± 0.7

Post-partum interval (d)

261 ± 20

354 ± 70

E 2 – 24 h prior (pg/ml)

2.0 ± 0.4

2.0 ± 0.2†

E 2 – 12 h prior (pg/ml)

1.6 ± 0.2

2.1 ± 0.3

E 2 – TCET (pg/ml)

1.6 ± 0.3

1.7 ± 0.2†

P 4 – 24 h prior (ng/ml)

2.8 ± 0.4§

3.0 ± 0.3§‡

P 4 – 12 h prior (ng/ml)

3.3 ± 0.4

3.9 ± 0.3§

P 4 – TCET (ng/ml)

3.8 ± 0.5§

3.8 ± 0.3‡

E 2 : P 4 – 24 h prior

0.9 ± 0.3†

0.8 ± 0.1•

E 2 : P 4 – 12 h prior

0.6 ± 0.1

0.6 ± 0.1

E 2 : P 4 – TCET

0.5 ± 0.09†

0.5 ± 0.1•

  1. Within columns, a significant difference (p < 0.05) exists between the two values denoted by the same symbols: †§‡•.