A study was conducted to evaluate the feed value of whole barley silage made at different stages, of growth. Twelve growing cattle were fed rations consisting of Italian ryegrass silage (T₁), milk stage whole barley silage (T₂) and whole barley silage at the ripening stage (T₃) far a period of 90 days. Results obtained from feeding trials were: 1. Crude protein content of silages were T₁; 2.69%, T₂; 3.99% and T₃; 5.0%. Total organic acid content of silages were 3.43 (T₁), 2.54% (T₂) and 5.44% (T₃). Showing the superior quality of silage made from whole barley at the ripening stage. 2. Daily dry matter intake of silage were T₁ ; 2.26㎏, T₂ ; 3.89㎏ and 4.29㎏ in T₃. The highest daily weight gain was found in T₃ (0.83㎏/head/day) following by T₂ (0.7㎏/head/day) and was lowest in T₁ (0.69㎏/head/day). 3. A linear curve regression equation between daily weight gain and silage intake showed T₁ : Y=1.36-0.03X +3.04X² R=0.773**, T₂; Y=2.175 + 1.714X+0.143X² R=0.567 and T₃; Y=3.778 - 3.71X + 5.323X² R-0.887**.