Comparison of warm season and cool season forages for dairy grazing systems in continuous culture.

The objective of this study was to compare warm-season annual grasses to cool-season perennial () grasses for ruminal nutrient digestibility and N metabolism in a dual-flow continuous culture fermentation system. Dietary treatments were 1) fresh alfalfa, 2) grasses and legumes, 3) brown-midrib sorghum-sudangrass (), and 4) teff grass from an organic dairy production system. Eight dual-flow continuous culture fermenters were used during two consecutive 10-d periods consisting of 7 d for stabilization followed by 3 d of sampling.