Abstract:
The 1988 National Research Council's (NRC) Nutrient Requirements of Dairy Cattle have
been revised. Adjustments have been made in the recommended requirements for net energy for
lactation (NEL); crude protein (CP); calcium (Ca); phosphorus (P); and vitamins A, D, and E.
In addition, suggestions are made for using undegraded intake protein (UIP) and degraded intake
protein (DIP) for diet formulation.