Predisposing factor to white line disease?

• A. Beef
• B. Laminitis
• C. Hemorrhage
• D. Biotin

Answer: (B)

Laminitis damages the laminar attachments that secure the hoof wall to the bone. When these laminae are inflamed or necrotic, the hoof wall lifts away at the white line, creating a gap that becomes an entry point for debris, moisture, and pathogens. That separation at the white line provides the setting for the characteristic white line disease to develop. In cattle, this link between laminitis and separation at the white line is the key reason laminitis is a predisposition.

Other options don’t fit as well. Beef describes an animal production category rather than a disease mechanism; hemorrhage isn’t a recognized predisposing factor for this condition; biotin is typically used to improve hoof health and deficiency would predispose to hoof problems, not act as a risk factor in the sense of causing white line disease.