Show supplement to urea urea the nitrogen compound known as a protein substitute for cud chewing animals works well for growing heifers heffers in a ration made up of roughage molasses urea and a small amount of either protein or starch molasses urea and low protein roughage does not constitute a good ration alone but should be supplemented by some such protein as casein the the molasses does not stay in animals animal s rumen long enough tor or microorganisms micro organisms to convert ef ly the molasses and urea ini into to protein it is for this reason that some added other form of protein must be |