Ag Processing Inc. plans to expand one of its soybean processing plants in Minnesota to boost production of a soy feed additive for cattle.

AGP said Tuesday it plans to invest millions of dollars in expanding the Dawson, Minn., plant, but the company did not say exactly how much the project will cost.

CEO Keith Spackler says demand is strong for the AminoPlus product, and this expansion will help the company serve customers in the upper Midwest, Canada and other international locations.

AGP says its AminoPlus supplement helps improve milk production at dairies. It is already produced at AGP’s plants in Hastings, Neb., and in Mason City and Sergeant Bluff, Iowa.

AGP is owned by co-ops representing more than 250,000 farmers in 16 states.