Dry roughages, viz. wheat straw (WS), rice straw (RS), barley straw (BS), oat straw (OS), gram straw (GS), lentil straw (LS), sorghum stover (SST), pearl millet stover (PMST), maize stover (MST) and dry mixed grass (DG) fed to livestock were characterized for carbohydrate and protein fractions, energy, in vitro dry matter digestibility (IVDMD) and in vitro methane (CH4) emission in buffalo inoculums with the objective to rank dry roughages for CH4 emission, and to correlate their nutritional constituents with CH4 production.