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lood serum 32 . Up to 27percent of dietary dry matterwas successfully includedwithout loss of milk yield,percentage of milk proteinand non-fat solids 33 . A combinationof 20 percent corngluten feed and 1 percentsodium bicarbonate was aneffective replacement forneutral detergent fiber(NDF) from corn silage 22 .Dried corn gluten feed wasfound to be a satisfactorysource of energy, proteinand fiber when it comprised15 to 20 percent of feed drymatter 34 .Wet corn gluten feed is alsoan excellent source of protein,energy and digestiblefiber for lactating dairycows. Fat-corrected milkproduction was maintainedwhen wet corn gluten feedreplaced corn and soybeanmeal at 25-30 percent of thediet dry matter in corn-cornsilage based diets 35, 36 . Milkfatpercentage increasedlinearly as dietary level ofwet corn gluten feed increasedfrom approximately20 to 40 percent 36, 37 . Researchsuggests that wet glutenfeed can replace at least33 percent of the neutraldetergent fiber in foragebaseddiets for dairy cattlewithout changing theacetate:propionate ratio 38 ,which is necessary for maintaininghigh milk fat levels.When wet corn gluten feedwas fed as 90 percent of thediet to dairy replacementheifers, daily gain and feedefficiency were significantlyimproved compared withheifers fed alfalfa haylage,oatlage or sorghum-soybeansilage based diets 39 .Corn steep liquor has becomean important source ofprotein, energy and phosphorusin liquid feed supplementsfor beef and dairycattle. Corn steep liquor isequal to soybean meal andequal or superior to urea as acrude protein source in feedlotdiets 40, 41 . A liquid supplementcontaining 71 percentcorn steep liquor was equalto cottonseed meal as asupplemental protein sourcefor cows grazing dormantnative range. Supplementblocks are often used to providenutrients for rangecattle. Corn steep liquorserves as both a nutrientsource and binder in manyrange block formulations. Apelleted combination of rawsoybean hulls and condensedcorn steep liquorsuccessfully replaced a portionof the forage, grain andsoybean meal in diets forlactating dairy cows withoutdecreasing lactational performance42 . Corn steep liquorwas fed at 10 percent levelsin concentrate mixtureswithout affecting the produc-14