Utah State University Extension
Low‐quality forages (LQF) such as cereal straws or post‐ripe hays are often used as economical feed sources for the wintering of beef cow herds. The ammoniation of such forages increases the digestibility and crude protein (CP) enough so that these forages can be used as the basis of beef cow diets, even during late gestation and early lactation if supplemented properly.
ZoBell, D. R., "Proper Use of Ammoniated Low-Quality Forages for the Wintering of Spring-Calving Beef Cow Herds in the Intermountain West" (2000). All Current Publications. Paper 1371.