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Table 1 Ovarian reaction and estrus manifestation in sexually mature and pre-pubertal gilts treated with eCG (average ± SD)

From: Ovarian reaction and estrus manifestation in delayed puberty gilts after treatment with equine chorionic gonadotropin

Parameter Gilts reproductive status
  Sexually mature (cyclic) Total Sexually immature (acyclic)††
Spontaneous estrus detection to eCG injection (days) 5 11 17 (5, 11, 17) -
Gilts with ovulation response after eCG 95% (19/20) 90% (18/20) 95% (19/20) 93.3% (56/60) 90% (18/20)
Average CL1 number 18.05 ± 2.48 (12–22) 19.28 ± 4.82 (14–32) 19.63 ± 4.86 (13–34) 18.95 ± 4.17A (12–34) 11.78 ± 3.51B (4–20)
Average CA2 number 10.75 ± 2.31 (6–14) 10.45 ± 2.57 (7–15) 11.25 ± 2.30 (7–16) 10.82 ± 2.3B (6–16) -
Gilts with induced estrus detected 95% (19/20) 90% (18/20) 95% (19/20) 93.3% (56/60) 85% (17/20)
eCG to estrus (days) 24.9 ± 0.62A (24–26) 25.1 ± 0.34A (24–26) 4.2 ± 0.73B (3–6) - 4.1 (3–5)
Spontaneous estrus to estrus after eCG (days) 33.9 ± 0.61A (33–35) 40.1 ± 0.69A (38–42) 21.2 ± 0.73B (20–23) - -
  1. Single i/m injection 1.000 IU eCG. ††400 IU eCG + 200 IU hCG 72 h later.
  2. 1Corpora lutea.
  3. 2Corpora albicantia per gilt.
  4. ABValues with different superscript are statistically significant p < 0.05.