If energy requirement is the limiting factor for a cow, what might happen if an excessive amount of alfalfa is fed?

Answer

A surplus of protein is metabolized and excreted

If alfalfa is fed when energy is the limiting factor, the cow may receive more protein than needed, resulting in the surplus protein being metabolized and subsequently excreted, which represents an inefficient use of the expensive forage.

If energy requirement is the limiting factor for a cow, what might happen if an excessive amount of alfalfa is fed?
nutritioncattlelivestockfeedalfalfa