Steers fed diets based on dry-rolled wheat or sorghum grain alone or
combined (50:50) showed no differences in net portal fluxes of glucose, L-lactate,
ammonia, urea, or alpha-amino nitrogen. Portal blood flow was increased in steers
fed the 50:50 diet. Total volatile fatty acid flux into the portal blood tended to be
lower for steers fed the sorghum grain diet, which may partially explain the lower
feeding value of sorghum grain compared to wheat or the two grains combined.