Advise people on a proper diet to improve their health.
Contacts dairy farmers to negotiate contracts for purchase of dairy products and to discuss methods for improving milk production: Negotiates with farmers for long-term contracts to purchase milk or cream of specified butterfat content. Discusses milk production problems and tests milk for butterfat content, sediment, and bacteria. Suggests methods of feeding, housing, and milking to improve production and to comply with sanitary regulations. May set up truck routes to haul milk to dairy. May solicit memberships in cooperative association. May sell items, such as dairy farm equipment, chemicals, and feed.