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Recent advances in equine reproduction.

F L Dawson

    Equine Veterinary Journal
    |January 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Seasonal changes affect mare reproduction, with daylight influencing ovulation. Advances in diagnostics and treatments improve outcomes for equine pregnancy, parturition, and reproductive health in both mares and stallions.

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    Area of Science:

    • Equine reproduction
    • Veterinary science
    • Animal physiology

    Background:

    • Mare ovulation is influenced by photoperiod, with reduced activity in winter.
    • Pregnancy involves complex hormonal changes and specific physiological events.
    • Reproductive health issues in mares include embryonic death, abortion, and endometritis, while stallions exhibit seasonal reproductive function.

    Purpose of the Study:

    • To review current knowledge on equine reproductive physiology and pathology.
    • To highlight advancements in diagnostic and therapeutic methods for equine reproduction.
    • To address seasonal influences on reproduction in both mares and stallions.

    Main Methods:

    • Review of existing literature on equine reproductive cycles and health.

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  • Discussion of diagnostic techniques such as rectal examination and hormonal assays.
  • Overview of treatments for pregnancy termination, parturition induction, and endometritis.

    • Main Results:

    • Ovulation is triggered by increasing daylight, and corpora lutea regress mid-pregnancy.
    • Pregnancy diagnosis is efficient via rectal examination and hormonal assays (pregnant mare serum gonadotrophin).
    • Foal heat service increases embryonic death; twinning is a common cause of abortion. Bacterial endometritis and specific infections (horse pox, Mycoplasma) are identified. Stallion reproductive function is seasonal, with accurate methods for undescended testis determination.

    Conclusions:

    • Effective methods exist for managing equine pregnancy, including early termination and parturition induction.
    • Improved diagnostics and treatments enhance the management of mares with reproductive issues like endometritis.
    • Understanding seasonal reproductive patterns in both sexes is crucial for successful equine breeding programs.