Ration formulation using linear programming.

A combination spreadsheet-LP ration formulation program offers tremendous advantages for dairy nutritionists. The spreadsheet format provides the framework for flexibility in describing feeds and in formulating a realistic and practical ration. The LP module can solve for a complicated set of nutrient requirements to give a relatively well-balanced ration. This "first-cut" ration can then be reworked in the spreadsheet mode to meet the needs of the individual farm based on other biologic and management considerations.