Importers have purchased about 45,000 tonnes of distillers' dried grains with solubles (DDGS) from the United States, European traders said on Monday. DDGS is a by-product of corn ethanol that is used by animal feed producers as a substitute for corn and soymeal. The purchase by Pakistani importers was made at around $215 a tonne c&f for March/April shipment, they said. Pakistan has purchased DDGS in the past but mainly in small container-load consignments, they said.