A federal jury in Illinois ruled this week that several major egg producers conspired to limit the U.S.’s supply of eggs in order to raise prices in a case stemming from a federal lawsuit originally filed 12 years ago.Several large food manufacturing companies including Kraft Foods Global, Inc. and The Kellogg Company alleged in the lawsuit originally filed in 2011 that producers used various means to limit the U.S. domestic supply of eggs to increase the prices of eggs and egg products during the 2000s. The time frame of …