Which type of forage is known to be lower in protein than alfalfa?

Timothy hay is recognized for having lower protein content compared to alfalfa. Alfalfa is classified as a legume and is well-known for its high protein levels, often exceeding 15-20% crude protein. In contrast, Timothy hay, which is a grass, typically has a protein content ranging from 8% to 12%, depending on the maturity and growing conditions. This makes Timothy hay suitable for certain equine diets where lower protein levels are required, such as for maintenance or for horses that are not in heavy work.

The other options, while they may vary in protein content, tend to be closer to or even exceed the protein levels found in Timothy hay. For instance, Bermuda grass and ryegrass can sometimes offer protein levels above that of Timothy, especially if harvested at the right stage of growth. Orchard grass also tends to have protein contents that may be comparable to or higher than Timothy depending on the conditions in which they are grown. Thus, Timothy hay is specifically recognized for its lower protein content compared to alfalfa, making it the correct choice in this context.