Cows were housed in individual pens and individually fed concentrate at 1% BW.All cows were fed ad libitum of UTS with water and a mineral-salt block.Feed intake of concentrate and roughage were measured separately and refusals recorded. The experiment was run for 120 days, the first 15 days for treatment adaptarion and for feed intake measurements whist the last 7 days were for sample collections of faeces, urine and rumen fluid Body weights were measured each 30 days during the sampling period prior to feeding.