The botanical, chemical composition and dry matter digestibility of collected herbage samples from sheep fitted esophageal fistula were compared to those of offered herbage samples by the sown pasture, oversown pasture and forest pasture at the 3rd flush stage (25cm grass height). Experimental fields was treated by one plot design and lasted from Aug. 1987 to Oct. 1987 at Chungnam National University, Daejon. The results obtained are summarized as follows: 1. The botanical composition of collected herbage samples was different from offered herbage samples and this difference seemed to depend on diet selection. 2. The sheep consistantly selected more ladino clover than orchardgrass and tall fescue. 3. Crude protein content of collected herbage samples was high (P<0.01) and NDF content was low (P<0.01) on the sown and oversown pastures but forest diets contained more crude fat content (P<0.05) and less crude protein and NDF content (P<0.01) than offered herbage samples. 4. Dry matter digestibility of collected herbage samples was higher than offered herbage samples (P<0.0 1) and this difference was found out among pasture types.