Comparison of near infra-red spectroscopy, neutral detergent fibre assay and in-vitro organic matter digestibility assay for rapid determination of the biochemical methane potential of meadow grasses

► NIRS, IVOMD assay and NDF assay have been investigated as rapid biochemical methane potential assessment methods. ► Models have been built to predict the BMPs of meadow grasses using NIRS, IVOMD and NDF. ► Amongst the three methods, NIRS shows the best prediction results and seems to be a promising option.