Smithfield and its hog production subsidiary, Murphy-Brown, are asking their contract sow-growers to convert their facilities from gestation stalls to group housing systems for pregnant sows. Consumer Trends, New Demands Impact on Meat Production The first week of January has been full of major announcements about new demands on the livestock and poultry industry.First, Smithfield and its hog production subsidiary, Murphy-Brown, are asking their contract sow-growers to convert their facilities from gestation stalls to group housing systems for pregnant sows. The company says it will offer incentives to its growers to complete the conversions by 2022, and that growers who commit to this will receive contract extensions upon completion. Smi...