an experiment was conducted using 16 holstein male calves from 4 to 21 d of age to compare 1 ) the effects of an all-milk protein milk replacer ( mpr ) and a milk replacer with 20 % of the protein from soy protein concentrate ( spc ) on morphological and enzymic small intestinal variables , and 2 ) the effects of spc plus putrescine ( spp ) or spc plus ethylamine ( spe ) on intestinal variables .
C0021852
small intestinal
C0021853
intestinal