What is thrush in horses?
Who hasn't seen it? The snow has melted, the horses are finally coming out to pasture again after a long season in the stable – and the ground has become soft from the thaw. Or they are already out in the muddy spring pasture, where moisture and mud put a lot of strain on the hoof. It is exactly in such situations that you often hear: “My horse must not stand in the mud, otherwise it will get thrush.”
The risk is also high in autumn: With the days getting shorter and the frequent rain showers, pastures quickly turn into damp, muddy areas. Leaves, manure, and persistent moisture create an ideal environment in which bacteria can multiply and attack the hoof wall. No wonder, then, that thrush in horses is one of the most common hoof diseases.
👉 Challenges for horses in autumn
👉 Challenges for horses in spring
Whether in spring or autumn – wherever moisture and poor stable hygiene come together, the risk of thrush increases. That is why it is important to know the causes, symptoms, and treatment options and to prevent it in time, so that your horse's hooves stay healthy.
In a cross-sectional study with 942 horses in the Netherlands, 85% suffered from at least one hoof disease. Thrush (English: thrush) was diagnosed most frequently – in 45% of the horses examined.
(Holzhauer et al., 2017, Preventive Veterinary Medicine, DOI: 10.1016/j.prevetmed.2017.02.013
Litzke's definition of thrush:
“Thrush refers to the decomposition and gradual conversion of the sole horn into a greasy, foul-smelling, discolored mass by putrefactive pathogens.”
(Definition from “Der Huf” by F.-L. Litzke)
Symptoms – how to recognize thrush
Thrush is recognized by deep sole grooves and the putrid stench that is released when the hoof is picked out. It is caused by putrefactive pathogens that occur everywhere in the soil and penetrate small injuries in the sole horn.
In the absence of air, they then cause the sole to decompose and, in the worst case, lead to an inflammation of the frog and the hoof skin. Many horses seem to be affected by this, especially in spring.
- Typical putrid smell from the hoof
- Black, eaten-away horn in the sole grooves
- Sensitivity to pain when picking out
- In severe cases: lameness
What is the main cause of thrush?
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In our opinion, a weakened immune system and a sub-optimal metabolism must be seen as the main cause.
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Consequently, several factors that come together in winter favor thrush: With little exercise and long periods standing in the box, self-cleaning by the barely active hoof mechanism is limited.
- In addition, ammonia from urine accumulates in damp bedding and on wet ground in the pasture. This acts as a lye, attacks the sole horn, and provides the bacteria with additional space. When the horse hooves are now filled with dirt, air no longer reaches the sole, and the putrefactive bacteria have the ideal environment and decompose the sole.
There are many different products on the market, some based on strong chemical products, that are intended to combat thrush.
How can we prevent thrush?
It is worth paying attention to certain everyday aspects of management:
- Dry, ammonia-free stables,
- mucked-out pastures, and
- daily hoof care are essential to prevent thrush.
- If thrush still occurs, it is recommended that the farrier/hoof trimmer thoroughly cuts away all putrid areas in the sole.
- Daily rinsing with water does not harm the hoof. It washes away the putrefactive pathogens and the ammonia.
- After that, however, the hooves should be dried well and not greased, otherwise oxygen will not penetrate to the deepest areas.
- Of course, the horses should still go out to pasture daily despite the mud. But perhaps the farrier or the stable colleague can quickly pick out the hooves if you cannot do it yourself.
Hoof podiatrist Armin Eberle works on a hoof with thrush in the video. After cleanly cutting it out, he uses the Zeolite Hoof Powder from STEINKRAFT.
"The effectiveness of the hoof powder is further supported by supplemental feeding of zeolite. Because I often experience that many horse owners are not even aware that you can tell by the hooves if something is wrong with the acid-base balance. And I recommend zeolite as bedding anyway preventively."
Recommendation from hoof expert Martina Wimmer from Kitzbühel 💛
Home remedies for treating thrush: Overview
There are numerous home remedies that can be used for thrush. The following overview shows the effect, application, and benefits at a glance. For the overview readers in the table. Afterwards we describe the home remedies in more detail.
| Home remedy | Effect | Application | Special benefit |
|---|---|---|---|
| Vinegar solution | Antibacterial, disinfectant | Dilute 1:1 with water, apply daily to affected areas | Regulates the environment in the hoof |
| Saltwater solution | Antibacterial, drying | 1 tbsp salt in 1 L warm water, rinse the hoof | Simple & cost-effective |
| Tea tree oil | Antiseptic, antibacterial, fungicide | Apply a few drops (diluted) with a cotton pad | Particularly effective in combination with zeolite |
| Betadine / Iodine | Strongly disinfectant, drying | Apply sparingly, only in consultation with a veterinarian | Reliably effective in severe infections |
| Sugar-iodine paste | Sugar draws moisture from bacteria, iodine disinfects | Mix 3 parts sugar + 1 part iodine, apply 1–2x daily | Effectively draws putrefaction out of the sole |
| Coconut oil | Antibacterial, protective, nourishing | Apply thinly to the cleaned hoof area | Keeps the sole supple |
| Garlic paste | Antibacterial, antiviral, fungicide | Crush fresh garlic into a paste, apply, and wash off after a few minutes | Natural “all-purpose weapon” |
| Zinc oxide ointment | Disinfectant, promotes healing | Apply directly to affected areas | Protects horn from external influences |
| Toothpaste | Antibacterial, slightly drying, cleaning | Apply thinly, massage in, and wash out after a few minutes | Practical & quickly available |
| Zeolite | Highly absorbent, binds moisture & pollutants, antibacterial | Apply as a powder directly into cracks & grooves | Natural mineral, dries and regenerates |
Now once again in full sentences the effect and application of the home remedies.
1. Vinegar solution:
- What it does: Vinegar has an antibacterial and disinfectant effect.
- Application: Mix apple cider vinegar or regular household vinegar 1:1 with water. Clean the affected hoof areas daily with the solution. This helps regulate the environment in the hoof and inhibit bacterial growth.
2. Saltwater solution:
- What it does: Salt has an antibacterial and drying effect.
- Application: A saltwater solution can be easily made at home by dissolving one tablespoon of salt in one liter of warm water. Rinse the hoof thoroughly and apply the solution specifically to the affected areas.
3. Tea tree oil:
- What it does: Tea tree oil has strong antiseptic, antibacterial, and fungicide properties.
- Application: A few drops of tea tree oil can be carefully applied to the affected areas with a cotton pad or a clean cloth. For deeper thrush, the tea tree oil should be slightly diluted (e.g., with water or a base oil like olive oil) to avoid irritation.
TIP: mix a few drops of tea tree oil with fine zeolite powder. This way you apply two active components at the same time. This combination has shown the most effect for us.
4. Betadine (iodine solution):
- What it does: Betadine has a strong disinfectant and antiseptic effect.
- Application: Carefully apply the iodine solution to the affected areas. Since iodine also has a strong drying effect, it should be used sparingly and only in consultation with the veterinarian.
5. Sugar-iodine paste:
- What it does: Sugar acts hygroscopically, meaning it draws moisture from bacteria, while iodine disinfects.
- Application: Mix 3 parts sugar with 1 part iodine into a paste. This is applied to the affected area and ensures that the thrush dries out. This paste can be applied up to twice daily.
6. Coconut oil:
- What it does: Coconut oil has an antibacterial and moisturizing effect and protects the affected area from the penetration of further bacteria.
- Application: Apply a thin layer of coconut oil to the cleaned hoof area. The oil keeps the affected area supple and protects against drying out.
7. Garlic paste:
- What it does: Garlic acts antibacterially, antivirally, and fungicidally.
- Application: Crush a few garlic cloves into a paste and apply it to the affected areas. Let the paste work for a few minutes and then clean the hooves thoroughly.
8. Zinc oxide ointment:
- What it does: Zinc has a disinfectant and healing effect.
- Application: Apply the ointment to the affected areas to promote healing and protect the horn from external influences.
9. Toothpaste:
- What it does: Toothpaste often contains antibacterial ingredients that can also help in combating thrush. The paste also has a slightly abrasive effect that cleans and dries the hoof horn.
- Application: Apply a small amount of toothpaste (preferably one without additives like fluoride) to the affected areas and massage in. After a few minutes, wash out thoroughly. Toothpaste is particularly suitable for superficial thrush and as an additional measure for hoof cleaning.
10. Zeolite:
- What it does: Zeolite is a natural volcanic mineral that binds excess moisture and harmful substances from the hoof due to its high absorption capacity. It also has antibacterial properties and promotes healing.
- Application: Zeolite powder can be sprinkled directly onto the affected areas after cleaning. It helps keep the hoof dry and supports horn regeneration. For deeper cracks and fissures, zeolite can be carefully introduced into the affected areas with a cotton swab or wooden stick.
Tips for applying hoof powder for thrush:
- Regular cleaning: Before applying a home remedy, the hooves should be thoroughly cleaned to remove dirt and bacteria.
- Clean environment: A clean and dry environment is important to prevent bacteria from re-entering the hoof.
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Professional check: Regular checks by a farrier, naturopath, or veterinarian are necessary to monitor progress and adjust the treatment if necessary.
“Before tinkering with the hoof yourself, I always advise having thrush examined by a veterinarian or farrier."
Focus-Tierarzt Magazine: Recognizing, treating, and preventing thrush in horses
Hoof care tips - from hoof therapists:
Thrush is a hoof disease - caused by decay bacteria.
“Thrush is caused by anaerobic bacteria (bacteria that grow without oxygen). The bacterium Fusobacterium necrophorum (a pathogen that can also cause decay and abscesses) plays a crucial role in this.“
Petrov et al., 2013, Veterinary Microbiology, DOI: 10.1016/j.vetmic.2012.07.037
To prevent thrush or during treatment, all factors that promote decay should be avoided.
Armin Eberle, a hoof therapist from Switzerland, therefore recommends:
1. Clean housing for the horse is very important. The stable should be mucked out regularly. Good results can also be achieved with high-quality and dry bedding .
2. If thrush has already broken out, the hoof sole should be cleaned and zeolite hoof powder added (possibly in combination with gauze). This should be repeated every day.
3. Sometimes horses are so over-acidified (e.g.: taking medication), that the gut can no longer handle it. Then the skin helps out and the toxins come out through the hooves. The gut can be supported in detoxification here.
4. All measures that strengthen the animal's immune system can help.
5. A bath can be supplemented with a zeolite additive. Even with swelling in the leg (the cause of which is always in the body), zeolite ointment or a zeolite mask or a bath with a zeolite additive can be used.
Conclusion: Treat thrush in horses early and prevent it naturally
Thrush is a widespread hoof disease that causes pain to horses and can lead to inflammation in the worst case. Those who recognize the typical symptoms such as deep sole fissures and the foul smell early on can quickly counteract it with consistent care, home remedies, and professional support.
Clean, dry housing conditions and daily hoof care are particularly important. At the same time, the immune system should be strengthened and the metabolism supported to promote hoof health from the inside out.
As a natural support, zeolite has proven itself:
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Zeolite hoof powder dries the sole, binds moisture, and inhibits decay pathogens.
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Zeolite bedding ensures a clean, dry environment in the stable and acts preventively against thrush.
This is how horse owners can treat thrush in a gentle, sustainable way and at the same time prevent it from recurring – for permanently healthy and resilient horse hooves.
💬 Customer experiences with thrush
👉 Here you can find more customer experiences and reports on the application of zeolite in horses ♡🐴♡
👉 And here you can watch an experience report from Heike Kemmer. She recommends the zeolite hoof powder - because it is natural and works!
FAQs
❓How do I recognize thrush in horses?
By the foul smell, black horn parts, and pain-sensitive sole fissures.
❓What helps quickly against thrush?
Daily hoof care, clean housing, and natural remedies like zeolite hoof powder with tea tree oil.
❓Can thrush be treated with home remedies without chemicals?
Yes, e.g. with apple cider vinegar or tea tree oil. Special hoof powders like zeolite are more effective.
❓How do you prevent thrush?
Through consistent hoof care, dry boxes with absorbent bedding, and sufficient exercise.
⭕️ Conclusion:
Thrush in horses is a widespread hoof disease that occurs mainly in wet seasons such as spring and autumn. The cause is usually decay bacteria such as Fusobacterium necrophorum (a bacterium that multiplies strongly in oxygen-poor, moist environments). The good news: With consistent hoof care, clean and dry housing, and targeted treatment, thrush can be well managed in most cases.
Natural remedies like Zeolite hoof powder - here the effect of zeolite is combined with the power of tea tree oil - can help by binding moisture, depriving bacteria of their breeding ground, and promoting the healing process. It is important to recognize thrush early and consistently eliminate the causes to prevent relapses.
So it goes: Those who know the causes, take symptoms seriously, and rely on regular care can effectively treat and prevent thrush – and enable their horse to have permanently healthy, stable hooves.
👉 Discover zeolite hoof powder in the shop now
Sources:
Ali, Q., Fatima, A., Hussain, N., Jamali, M. K., Hassan, S., Aziz, A., Arkan, A., & Rashid, H. B. (2024). Comparative efficacy of Pythium oligandrum, thrush powder and magnesium sulphate to treat thrush in horses. Journal of Population Therapeutics and Clinical Pharmacology, 31(5), 149–157.
Holzhauer, M., Dik, K. J., van der Hoorn, M., & van Weeren, P. R. (2017). Cross-sectional study of the prevalence of and risk factors for hoof disorders in horses in The Netherlands. Preventive Veterinary Medicine, 139, 99–104. https://doi.org/10.1016/j.prevetmed.2017.02.013
Petrov, K. K., Baric, R. S., & Vlahovic, M. S. (2013). Fusobacterium necrophorum, and not Dichelobacter nodosus, is associated with equine hoof thrush. Veterinary Microbiology, 162(2–4), 914–918. https://doi.org/10.1016/j.vetmic.2012.07.037
Wilson-Welder, J. H., Krull, A. C., & Plummer, P. J. (2024). Correlation of lesion severity with bacterial changes in hoof lesions. Animal Microbiome, 6(1), Article 21. https://animalmicrobiome.biomedcentral.com/articles/10.1186/s42523-024-00304-9
F.-L. Litzke, Der Huf – Lehrbuch des Hufbeschlages, edition (e.g. 6th ed.), Enke Verlag.
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