Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Ovarian function in captive feral mares.

E D Plotka1, D N Vevea, T C Eagle

  • 1Marshfield Medical Research Foundation, Inc., Wisconsin 54449.

Journal of Wildlife Diseases
|October 1, 1989
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Inter-decadal patterns of population and dietary change in sea otters at Amchitka Island, Alaska.

Oecologia·2017
Same author

Pocket gophers (Geomys bursarius), vegetation, and soil nitrogen along a successional sere in east central Minnesota.

Oecologia·2017
Same author

Genital tract smooth muscle tumors are common in zoo felids but are not associated with melengestrol acetate contraceptive treatment.

Veterinary pathology·2002
Same author

Isolation and characterization of a black-pigmented Corynebacterium sp. from a woman with spontaneous abortion.

Journal of clinical microbiology·2001
Same author

Rapid sexing of murine preimplantation embryos using a nested, multiplex polymerase chain reaction (PCR).

Molecular reproduction and development·1998
Same author

Effects of substrate and separation method on acrosin amidase measurements.

Journal of andrology·1996
Same journal

Mucormycosis in a Platypus (Ornithorhynchus anatinus) on the Australian Mainland.

Journal of wildlife diseases·2026
Same journal

Evaluation of Pronghorn (Antilocapra americana) Chemical Immobilization in a Captive Research Facility in Wyoming, USA (2021-24).

Journal of wildlife diseases·2026
Same journal

Blood Parasites of the Phylum Apicomplexa and Hematological Values in European Pond Turtles (Emys orbicularis) from Lublin Voivodeship, Eastern Poland.

Journal of wildlife diseases·2026
Same journal

Profiling of the Guadalupe Fur Seal (Arctocephalus philippii townsendii) Fecal Bacteriome in Relation to Alopecic Syndrome.

Journal of wildlife diseases·2026
Same journal

Comparison of Detection Rates of Toxoplasma gondii among Five Host Tissues and Two Primer Sets in Three Bird Species.

Journal of wildlife diseases·2026
Same journal

Escherichia coli Carrying Antimicrobial Resistance in Rehabilitating Bolivian Red Howler Monkeys (Alouatta sara): A Pre-Release Risk in the Peruvian Amazon.

Journal of wildlife diseases·2026
See all related articles

Captive feral mares exhibit seasonal ovulation, primarily from May to October. However, some mares ovulated year-round in subsequent years, suggesting less rigid seasonality than previously thought.

Area of Science:

  • Reproductive biology
  • Equine science
  • Animal behavior

Background:

  • Feral horses (Equus caballus) are seasonally polyestrus, with ovulation typically occurring during warmer months.
  • Understanding ovarian function in captive feral mares is crucial for conservation and management strategies.

Purpose of the Study:

  • To monitor ovarian function in captive feral mares over 33 months.
  • To determine the influence of captivity on the reproductive seasonality of feral mares.
  • To compare reproductive patterns with domestic horse breeds.

Main Methods:

  • Serum progesterone (P) levels were measured to monitor ovarian cycles.
  • Ovulation was defined as a P level greater than 2.0 ng/ml.
  • Data collected over 33 months from captive feral mares.

Related Experiment Videos

Main Results:

  • Feral mares predominantly ovulated between May and October.
  • In subsequent years, approximately 10% of mares showed signs of ovulation during the anestrous season (November, January, February).
  • Progesterone levels during the luteal phase and pregnancy were comparable to those in domestic mares.

Conclusions:

  • Captive feral mares demonstrate seasonal polyestrus, but this seasonality is less rigid than previously believed.
  • Captivity may lead to a slight shift in reproductive patterns, with some mares ovulating year-round.
  • Reproductive parameters in captive feral mares are similar to domestic breeds, indicating successful adaptation.