Home / Guides / Herd Health & Disease Management

Sole Ulcers in Dairy Cows: Causes and Prevention

Sole ulcers are deep, painful lesions on the bottom of the hoof. They develop over weeks, which means there is time to prevent them if you know the causes.

What a sole ulcer is

A sole ulcer is a break in the horn on the sole of the hoof, usually toward the back of the claw, with damage to the tissue underneath. It can be very painful, and cows often show lameness, shift weight and lie down more.

Sole ulcers rarely appear overnight. Damage inside the hoof begins weeks or months earlier, often around calving, and the visible sore shows up later. That delay is why a cow can seem fine at calving and be lame in mid-lactation.

Why they develop

The pedal bone and the soft tissue pad underneath cushion the sole. When that cushion is thinner or damaged, it cannot absorb the pressure of standing and walking, and the tissue gets bruised. Calving, hormonal changes, hard and wet surfaces, long standing times and rough handling all add stress.

Cows that stand a lot on concrete, either because stalls are uncomfortable or because of crowding at the bunk or in the holding pen, are at higher risk. Fat or thin cows may both be affected.

Risk factors worth checking

Walk your barn as a cow would. Look at where cows spend time standing and what they stand on. Consider the following:

• Stalls that are too small, hard or poorly bedded, causing cows to stand in alleys
• Long waiting time in the holding pen
• Rough, abrasive or wet concrete
• Hoof overgrowth from late trimming
• Sudden moves between pens around calving
• Rations that are too low in fiber or cause acidosis
• Heifers moved to concrete just before calving

Nutrition and hoof health

Diets that cause rumen acidity can affect hoof tissue, and subacute acidosis is often linked with hoof problems. Provide enough effective fiber, consistent feeding times, plenty of bunk space and well-mixed rations. Your nutritionist can check your ration, feed bunk management and forage quality.

Body condition also matters. A cow that loses condition quickly in early lactation may lose some of the protective fat pad in the hoof. Your nutritionist can help set targets using the one-to-five body condition scale.

Hoof care and early action

Routine functional trimming, done by a trained trimmer on a schedule that fits your herd, helps keep weight evenly distributed. Heifers and fresh cows often benefit from a check close to calving, and any cow scored as lame should be examined promptly.

Active sole ulcers need veterinary or trained hoof care. Techniques such as blocks and other supportive care are choices for your vet or trimmer. Never trim a deep lesion yourself without training.

Records and herd review

Record each lame cow, the hoof lesion found, the date and the treatment plan. Review the data every few months. Many ulcers in a single group point to a pen or housing problem, while many ulcers in fresh heifers suggest a transition issue.

Common mistakes

Waiting for obvious limping, trimming on a fixed calendar without a lameness record, overcrowding the close-up pen and ignoring the stall surface are typical errors. Another is leaving a sore cow in the same environment that caused the damage. Treated cows' milk and meat must be held for the withdrawal time on the label or set by your vet.

More in Herd Health & Disease Management

• Cow Comfort and Lameness: What the Data Says
• Udder Health Monitoring with Somatic Cell Counts
• Teat Condition Scoring: Why It Matters
• Milking-Time Hygiene Mistakes That Hurt Udder Health
• Dry Cow Therapy: Best Practices and Common Errors
• Selective Dry Cow Therapy: A Practical Guide