Eight 45-kg pigs fitted with a T-cannula at the terminal ileum were used following a double Latin square design. The rate of digesta passage, lag time (Tlag) and mean retention time (MRT) through the ileal cannula were measured for 36 h using titanium dioxide (TiO2) and Cr-mordanted fibre as indigestible markers for whole digesta and the fibrous phase of digesta, respectively.