What is Foul-in-the-foot
Foul-in-the-foot is an infection found between the digits. It affects the tissues under the skin in this area, causing severe pain, swelling of the foot and marked lameness. Foul is the most common cause of lameness in young stock and fattening units, in dairy herds it is more often confined to the young heifers that have recently been introduced to the herd.
Foul is caused by a combination of two bacteria, both of which are normal components of the cow’s environment. The bacteria invade through sites of injury and inflamed skin. Thus an environment which aids the damage or softening of the interdigital skin increases the spread of the disease. Such adverse environments can range from dry hard ground to wet muddy areas around gates and troughs
Clinical Signs
- Swelling of the feet, particularly at the front
- Increased temperature
- Sudden, severe lameness. This is usually in one limb only
- Reduced feed intake leading to significantly reduced milk yield or weight gain
- Interdigital skin has characteristic foul odour
Diagnosis
- On the clinical signs described above
- Examine the foot closely to exclude traumatic injury, foreign body penetration or bruising of the heels
Treatment
- Treat early. Some cases may recover without treatment, but the lameness will usually persist for several weeks with adverse effects on milk production and weight. Complications, such as joint involvement, are much more common if treatment is delayed
- Many antibiotics are effective against foul. Choose the antibiotic that suits your management regime best.
- Treat for long enough. Particularly for cases identified at pasture, repeated injections of antibiotics are much more effective than a single long-acting injection
- Injections of anti-inflammatories significantly improve cow well-being and help to restore the cow to normal production more quickly
- Local disinfection and treatment are necessary in more severe cases
Prevention
Both of the bacteria associated with foul-in-the-foot are widespread in the environment and eradication is therefore impossible. The aim of prevention must therefore be to reduce foul-in-the-foot to a minimum
1) Improve walkways and tracks. A good walkway need only be one cow wide
2) Fill-in muddy and stony areas around troughs and gateways
3) In housing, ensure no pooling of slurry. Scrape efficiently and at least twice a day.
4) Use copper sulphate or formalin foot-baths routinely, up to twice daily if there is a significant problem
5) Keep cattle feet as clean as possible
