Total Mixed Ration.TMR is a concept central to quality control of rations, which directly influences cattle performance. By reducing particle size of roughage, it is possible to combine them with other processed feed ingredients resulting in uniform ration characteristics as opposed to feeding roughages, such as hays, separately. When these conditions are achieved, it is technically possible to have consistency in each and every mouthful of feed consumed by cattle. This becomes extremely important in achieving a near ‘steady state’ environment to support normal (and optimum) reticulo-rumen functions of cattle.