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Related Experiment Videos

Vaginal pH during estrus in mares.

K L Polak1, W G Kammlade

  • 1Department of Animal Industries, Southern Illinois University, Carbondale, Illinois 62901, USA.

Theriogenology
|March 1, 1981
PubMed
Summary
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Vaginal pH in mares significantly decreases around ovulation, indicating a key physiological change. This pH shift is a reliable indicator of estrus and ovulation timing in horses.

Area of Science:

  • Reproductive Biology
  • Animal Science
  • Veterinary Medicine

Background:

  • Understanding estrous cycles in mares is crucial for reproductive management.
  • Vaginal pH can reflect physiological changes within the reproductive tract.

Purpose of the Study:

  • To investigate the relationship between vaginal hydrogen ion concentration (pH) and estrus in Saddlebred mares.
  • To determine if vaginal pH changes are indicative of ovulation.

Main Methods:

  • Vaginal pH was measured throughout the estrous period in Saddlebred mares.
  • Measurements were correlated with follicular development in pony mares.

Main Results:

  • A significant decrease (P < .01) in mean vaginal pH was observed on the day of ovulation compared to other estrus days.

Related Experiment Videos

  • Vaginal pH values showed a high correlation with follicular development in pony mares.

    • Conclusions:

    • A significant decrease in vaginal pH is characteristic of and indicative of ovulation in mares.
    • Vaginal pH monitoring can serve as a non-invasive tool to predict ovulation timing in horses.