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Table 1 Morphological and endocrine endpoints of follicles at aspiration and their subsequent residual follicles (RF) 72 h later in cows treated with estradiol benzoate (EB group) or saline (Control group) immediately after transvaginal ultrasound-guided follicle aspiration (TVFA)

From: Characterization of blood flow and the effects of exogenous estradiol benzoate on residual follicles formed after ultrasound-guided transvaginal follicle aspiration in cattle

Endpoint

EB

Control

P-value

Dominant follicles

   

Diameter

12.4 ± 0.8

12.8 ± 0.9

>0.05

E2, ng/mL

958.5 ± 208.0

927.3 ± 207.8

>0.05

P4, ng/mL

71.6 ± 22.2

65.3 ± 14.3

>0.05

E2:P4

17.5 ± 5.0

15.9 ± 2.9

>0.05

Residual Follicles

   

% Occurrence

50.0 % (5/10)

55.6 % (5/9)

>0.05

Diameter

8.8 ± 0.8

12.6 ± 1.9

0.01

E2, ng/mL

0.2 ± 0.1

53.5 ± 22.2

0.0004

P4, ng/mL

986.0 ± 602.9

1035.0 ± 425.9

>0.05

E2:P4 ratio, ×10-3

0.8 ± 0.6

51.7 ± 11.3

0.0005

  1. E2: Estradiol-17β in follicular fluid
  2. P4: Progesterone in follicular fluid