Thrush is a fungal or bacterial infection that attacks the frog
of the foot. It is a degenerative condition that, if caught in its early
stages is easily managed, but can become quite severe. The fungus or
bacteria exists in the clefts on either side of the frog, and horses
with long toes and contracted heels tend to develop deep frog clefts
and are particularly susceptible.
The prevailing symptom of thrush is the accumulation of a black, foul-smelling,
moist material. This discharge drains from the side grooves of the frog.
Early on the horse is sound, but left untreated, the condition will
progress until lameness appears. This occurs when the infection destroys
the horn of the frog and extends into the sensitive tissues.
Poor foot care and unsanitary conditions are the causes of thrush in
the horse. When the animal is left standing in dirty, moist conditions
and the feet are not cleaned regularly, the infection will flourish.
Conscientious stable management will eliminate these conditions.
Treating thrush is a simple procedure. Thoroughly clean the foot - particularly
the frog area - and then treat daily with a basic bleach and water mixture.
If the frog itself is damaged, all loose and dead tissue must be trimmed
away. The feet must then be cleaned every day to remove dirt and manure,
and the horse should stand on a clean, dry bed. Prevention is even simpler.
Maintain good hoof care and hygiene and have a qualified farrier keep
the foot properly trimmed and shaped.
