A:   'Hay Grazer' is a general term that refers to any of a number of sorghum-sudangrass hybrid varieties. These are quick-growing warm-season annual forages that can be harvested as hay or grazed. Their nutritional value is most affected by the stage of maturity when they are harvested. Younger, vegetative growth equals higher quality and older mature growth (with seedheads) equals lower quality. For example, this type of forage harvested at the boot stage may have 11 to 13% crude protein; but 8 to 10% protein if harvested when more mature. When in doubt, it is always a wise and inexpensive investment to get the forage tested at a lab. The results will allow better informed decisions as to the class of livestock that it is fed to as well as its sale value. There are some varieties available that are called BMR (brown mid-rib). This is a gene marker that indicates reductions of lignin content in the plant and often means better fiber digestion and palatability of the forage.