Finishing beef cattle require high energy rations to promote rapid and efficient gain. These rations typically consist of 85% grain and 15% forage.
Cattle on full feed rations are allowed to eat as much as they can consume, with the following guidelines:
High grain rations are often low in calcium, so limestone is added to support proper development and growth. Minerals, vitamins, and salt are best delivered through the grain ration.
For rations specific to your situation, consult with a qualified nutritionist.
Author's summary: Manitoba's agriculture guidelines for finishing beef cattle.