Ruminal and post-ruminaI dry matter (DM) and crude protein (CPO) disappearance of coffe pulp (wet extracted coffe been residual) were determined by in situ mobile bag technique. samples were analyzed for total n, acid detergent insoluble nitrogen (adin), neutral detergent fibre (NDF), ether extract (EE) and ash. four holstein steers (395:1:13 kg) fitted with rumenal fistulae and t-shaped intestinal cannulae were used. approximately 1.2 g of sample (DM) was placed in poltester bag (3 x 6 em, pore size of 48 ~lm, 18 bags per sample), then incubated in the rumen for 12 h. after removal from the rumen, bags were washed and those used for post-rumenal disappearance (9 bags) were inserted into the small intestine via the intestinal cannulae, then removed from the voided feces and rinsed in running water. nitrogen concentration of pre-incubated and incubated samples was detennind. the results indicated that coffe pulp contained low concentration of cp and high densities of structural carbohydrates (cp= liS, ndf=745, ee=II0, adin=16 and ash=22, g kg-I). mean ruminal DM and CP disappearance of coffe pulp was 0.09:1:0.01 and 0.12:1:0.08,respectively. post-ruminal disappearance of dm and cp of ruminal-undegraded sample was 0.06:1:0.0I and 0.03:1:0.01,respectively.

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