What nutritional elements support hoof horn quality?

• A. Vitamin C and calcium
• B. Biotin, zinc, copper; adequate energy and minerals; proper protein
• C. Biotin alone
• D. Zinc and copper only

Answer: (B)

Nutritional quality of hoof horn depends on supplying the building blocks for keratin, plus the cofactors and energy needed to drive keratin production and cross‑linking. Biotin helps keratinocytes process fats and proteins efficiently, supporting strong horn formation. Zinc supports keratinocyte proliferation and the production of structural keratin, while copper is important for enzymes that cross‑link proteins, contributing to horn durability. But these helpers work best when there is enough energy and protein available so the body can actually synthesize keratin and build strong tissue. Vitamin C and calcium, while important for other tissues, are not as directly linked to keratin-rich hoof horn, so they don’t address the specific needs of horn quality as effectively. Together, biotin, zinc, and copper with adequate energy and proper protein provide the most comprehensive support for hoof horn quality.