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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