Crude glycerin alters beef cow ruminal fluid degradability of nutrients in vitro.

Crude glycerin () is used as an energy supplement for cattle and has been shown to increase propionate and decrease acetate concentrations in the rumen. Glycerin also decreases ruminal NH, and therefore, we hypothesized that GLY in rumen fluid would decrease protein degradability of feedstuffs. The objective was to evaluate the effect of GLY in bovine rumen fluid on extent of protein degradability of alfalfa hay (), dried distiller's grains (), and soybean meal ().