Ruminal and hindgut digesta kinetic parameters in sheep estimated from faecal-marker excretion and slaughter trials A. de Vega, J. Gasa, C. Castrillo and JA GuadaAnn. Zootech., 43 Suppl. 1 (1994) 33sDOI: https://doi.org/10.1051/animres:19940542