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Table 2 Concentrations and characteristics of FSH, LH and estradiol-17b, and number of large follicles (>4 mm) and diameter of the largest follicles before introduction of rams (mean values until the introduction of the rams) to anestrous ewes primed for 6 days with intravaginal sponges containing 60 mg of MAP. Ewes were classified as E-O (those that came into estrus and ovulated), NE-O (those with a silent ovulation), and NE-NO (those that did not come into estrus or ovulate) (Experiment 2).

From: Endocrine and Ovarian Changes in Response to the Ram Effect in Medroxyprogesterone Acetate-primed Corriedale Ewes During the Breeding and Nonbreeding Season

  E-O NE-O NE-NO P
FSH levels (μg/L) 3.3 ± 0.1a 2.8 ± 0.1b 2.6 ± 0.3b < 0.01
LH basal levels (μg/L) 0.86 ± 0.05 0.84 ± 0.04 0.75 ± 0.05 >0.1
Estradiol-17β levels (pmol/L) 12.6 ± 0.6a 10.0 ± 0.6b 9.7 ± 5.3b < 0.001
Number of follicles > 4 mm 0.3 ± 0.1 0.5 ± 0.1 0.5 ± 0.1 >0.1
Diameter of the largest follicle (mm) 3.8 ± 0.1 3.9 ± 0.1 3.9 ± 0.1 >0.1
  1. Different letters within the same row indicate statistically significant differences.