Explain the classes of nutrients and their purposes.

Explanation should include

• sources of key nutrients
• functions of nutrients supplied by feed
• symptoms of nutritional deficiencies (e.g., protein, mineral, vitamin, carbohydrate). 

Process/Skill Questions: 

• Why do an active horse’s nutritional requirements differ from that of an idle horse?
• What feedstuffs provide large amounts of carbohydrates?
• Why is calcium an important mineral during the developmental stages of a horse?