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Corn gluten meal is a by-product from the manufacture of corn starch and corn syrup. It is very high in protein supplement in feeds for livestock, poultry and pets. It contains slightly more TDN than corn. The protein in corn gluten is degraded relatively slowly in the rumen.

A variety of corn gluten meal with 41 percent protein is available in some areas. It is higher in crude fiber (5 percent) and lower in TDN (78 percent) than the variety with 60 percent protein.

Corn gluten meal usually is not included in mixtures at levels greater than 15 percent or fed at a rate greater than 15 percent or fed at a rate greater than 5 pounds (2 ¼ kg) per cow per day due to poor palatability above these levels.