Byproduct feedstuf’’s commonly used in compounding cattle feeds were analyzed for proximate constituents, detergent fibre fractions and metaboiizahle energy (ME) content. Among the various fibre fractions ADF had the highest correlation (r 0.85) with ME, followed by ADL (r 0.75), CF (r 0.69) and NDF (r 0.47). Based on the relationship between CF (x) and ADF (y) (y= 7.93 + 1.25x, r 0.87, n = 44), levels of ADF were specified for cattle feeds of different levels of CF. Since the relationship between AIA (x) and'ADF ash (y) was, y = -0.0370 + 0.9701x (r 0.98, n = 42), ADF ash can be taken as a substitute for AIA. It was concluded that the ADF and ADF ash can be used as substitutes for CF and AIA respectively in quality control of cattle feeds.
