PSVIII-34 In vitro digestibility and fermentation kinetics of six irrigated forage hays in the US Intermountain West.

The goal of this study was to determine DM (DDM) and organic matter (DOM) digestibility and fermentation kinetics of six hays and their isolated NDF fractions using the in vitro gas production method. Alfalfa (ALF), birdsfoot trefoil (BFT), cicer milkvetch (CMV), sainfoin (SF) (all legumes), meadow bromegrass (MB) and small burnet (SB) substrates were incubated with beef cow rumen fluid for 96 h, and gas production kinetics was adjusted using a...