The accuracy of intake estimation based on the use of alkane controlled-release capsules and faeces grab sampling in cows Nigel R. Berry, Martin R.L. Scheeder, Franz Sutter, Thomas F. Kröber and Michael KreuzerAnn. Zootech., 49 1 (2000) 1-3DOI: https://doi.org/10.1051/animres:2000104