In Holland research by Wageningen Livestock Research and the Louis Bolk Institute shows that dairy cows that have a lot of sorghum in their ration have a higher feed intake but produce less milk than cows with a lot of silage maize in their ration. In the trial the cows with sorghum in the ration ate 0.8 kilograms more feed but produced one kilogram less milk. The cows with sorghum in the ration had a higher urea content in the milk.