In a recent University of Minnesota Extension newsletter, a reader asked how to prevent thrush in her horse's hooves as wet spring weather comes on.
Hannah Locher, with University of Minnesota extension, responded: Heavy snowfall combined with periods of rain this winter will leave many “dry” lots sloppy and muddy as spring arrives. While managing mud is key to preventing thrush, improving drainage in dry lots (e.g., installing a high-traffic pad) should occur during dry periods. Spring is always a good reminder to plan ahead for next year. In the mean time, keeping up on hoof care can help prevent thrush during mud season.
Thrush is a common infection of a horse's frog by anaerobic bacteria and fungi. If left untreated, thrush can destroy the frog, spread to the white line and sole, and expose sensitive tissues. Thrush often starts alongside the frog or in the central sulcus of the hoof and produces a foul-smelling, black discharge. Lameness can occur in severe cases.
Often, thrush is a result of uncleanliness or a hoof abnormality. Turnout and exercise support healthy hooves by aiding in the natural cleaning mechanism of the hoof. Changes and movement in the hoof help release organic material (e.g., manure) naturally. Hooves can become susceptible to thrush when this mechanism is impaired for example during long-term exposure to mud or being overdue for a trim.
- While not much can be done about the mud, here are a few tips to help fight off a thrush infection.
- Routinely pick out hooves.
- Keep horse areas as clean as possible; remove manure, soiled bedding, and hay waste.
- Have your horse on a regular hoof-trimming schedule.
- Consult with your farrier or veterinarian when considering commercial products to help prevent or treat thrush. Product effectiveness will depend on the situation and severity of thrush.
Sign up for the University of Minnesota Extension newsletter here.
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