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

Factors affecting gestation length in the Thoroughbred mare.

M C G Davies Morel1, J R Newcombe, S J Holland

  • 1Welsh Institute of Rural Studies, University of Wales, Aberystwyth, Ceredigion, SY23 3AL, UK. mid@aber.ac.uk

Animal Reproduction Science
|November 6, 2002
PubMed
Summary

Accurate prediction of mare parturition is aided by understanding gestation length. Colt foals and spring births significantly influence the length of equine pregnancies.

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

The immunolocalization of Galectin-1 and Progesterone-Induced Blocking Factor (PIBF) in equine trophoblast: Possible roles in trophoblast invasion and the immunological protection of pregnancy.

Placenta·2019
Same author

Effect of exogenous progesterone administration on luteal sensitivity to PGF during the early development of the corpus luteum in mares and cows.

Reproduction in domestic animals = Zuchthygiene·2017
Same author

The period of the follicular phase during which the uterus of mares shows estrus-like echotexture influences the subsequent pregnancy rate.

Theriogenology·2016
Same author

The effect of the interval from PGF treatment to ovulation on embryo recovery and pregnancy rate in the mare.

Theriogenology·2015
Same author

Asynchronous ovulation in mares: seasonal variations in frequency.

The Veterinary record·2015
Same author

Five cases of consecutive posterior (caudal) presentation of the fetus in two mares.

The Veterinary record·2014

Area of Science:

  • Equine Reproduction
  • Veterinary Science
  • Animal Husbandry

Background:

  • Accurate prediction of parturition timing in mares is crucial for foal viability and management.
  • Previous studies relied on mating-parturition intervals, which may not reflect true gestation length.
  • Understanding factors influencing gestation length is essential for identifying potential issues like dysmaturity.

Purpose of the Study:

  • To accurately determine the true gestation length in Thoroughbred mares (fertilisation-parturition).
  • To investigate the effect of various factors (foal sex, birth month, mare age, etc.) on gestation length.
  • To provide data for improved clinical assessment of equine pregnancy and parturition.

Main Methods:

  • Analysis of data from 433 Thoroughbred foal pregnancies.

Related Experiment Videos

  • Utilisation of sequential ultrasonic scanning to establish true gestation length.
  • Statistical analysis to determine the significance of different factors on gestation length.

    • Main Results:

    • Average gestation length was 344.1 +/- 0.49 days.
    • Colt foal pregnancies were significantly longer (346.2 days) than filly pregnancies (342.4 days).
    • Month of birth significantly affected gestation length, with January births shortest and April births longest.

    Conclusions:

    • The wide range of viable gestation lengths (315-388 days) is clinically significant for diagnosing foal dysmaturity.
    • Mares carrying colt foals expected in April (mid-breeding season) are likely to experience longer gestation periods.
    • Mare age, year, stallion age, stud farm, and ovulation-mating interval did not significantly impact gestation length.