DES MOINES, Iowa -- There has been very little discussion between food companies that have moved to phase out gestation-sow stalls and pork producers, according to Dallas Hockman, vice president of industry relations for the National Pork Producers Council. 

Hockman visited with AgriTalk, Pork Network's sister broadcasting entity, at World Pork Expo in DesMoines to talk about the pressure groups like the Humane Society of the United States are placing on food retailers.