Thrush is a common bacterial infection that can occur in the hooves of horses. It is caused by a bacteria called Fusobacterium necrophorum, which thrives in damp, dirty environments. Thrush can be a painful and uncomfortable condition for the horse and can lead to lameness if left untreated.

Here are some signs and symptoms of thrush in horse hooves:

1. Foul odor: One of the most noticeable signs of thrush is a strong, foul odor coming from the affected hoof. This odor is caused by the bacteria producing gases as it feeds on the hoof tissue.
2. Black, gooey discharge: Another symptom of thrush is a black, gooey discharge that can be seen in the affected area of the hoof. This discharge is caused by the bacteria breaking down the tissue of the frog.
3. Discoloration: The affected area of the hoof may also appear discolored, with a black or grayish color around the frog.
4. Pain and sensitivity: Horses with thrush may also be sensitive to pressure on the affected area and may show signs of pain when walking or standing.

To treat thrush, it is important to clean and dry the affected area of the hoof thoroughly. The hoof should be picked and cleaned daily, and the horse should be kept in a clean, dry environment. A farrier or veterinarian may also recommend the use of a commercial thrush treatment, which usually contains an antiseptic to kill the bacteria.

Preventing thrush in horses involves maintaining a clean and dry environment for the horse, regular hoof care and maintenance, and avoiding prolonged exposure to wet or dirty conditions. It is important to catch and treat thrush early to prevent it from causing further damage to the hoof and causing discomfort for the horse.