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Related Experiment Videos

Acyclicity and dyscyclicity in mares.

W Van Leeuwen

    Tijdschrift Voor Diergeneeskunde
    |January 15, 1977
    PubMed
    Summary

    Treating mares with ovarian functional disorders significantly improved conception rates. Chlormadinone acetate and prostaglandin F2alpha showed the highest efficacy in achieving pregnancy in treated mares.

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    Area of Science:

    • Reproductive endocrinology
    • Equine reproduction
    • Veterinary medicine

    Background:

    • Ovarian functional disorders affect mare fertility.
    • Understanding these disorders is crucial for successful breeding programs.

    Purpose of the Study:

    • To evaluate the efficacy of various therapeutic interventions for ovarian functional disorders in mares.
    • To determine pregnancy rates following different treatment protocols.

    Main Methods:

    • Observational study across two trotter stud farms over two breeding seasons (1972-1973).
    • 356 mares evaluated, with 78 diagnosed with ovarian functional disorders.
    • Treated mares included those with anoestrus, low ovarian activity, multifollicular ovaries, and persistent corpora lutea.
    • Therapies included PMSG, stilboestrol, physiological saline, chlormadinone acetate, prostaglandin F2alpha, and uterine curettage.

    Main Results:

    • Chlormadinone acetate resulted in 92.4% estrus and 57.9% pregnancy rates.
    • Prostaglandin F2alpha achieved 100% estrus and 88.9% pregnancy rates.
    • Physiological saline infusion yielded 73.1% estrus and 53.9% pregnancy rates.
    • Overall, 54.7% of treated mares conceived in the first estrus post-treatment.

    Conclusions:

    • Various therapeutic strategies can effectively manage ovarian functional disorders in mares.
    • Hormonal and physical interventions demonstrate significant potential for improving conception rates.
    • Chlormadinone acetate and prostaglandin F2alpha appear particularly promising for enhancing equine fertility.

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