In this April 2, 2014 file photo Calvin West, from Meyer Dairy Farm, watches spent grain bound for the farm fill a trailer at Empyrean Brewing in Lincoln, Neb. The federal government is backing off proposed regulations aimed at preventing livestock contamination that brewers say would add to their costs without improving the safety of grain used to feed livestock. Many beer makers sell or give grain leftover from the brewing process to farmers, who use it as feed for dairy cows and other animals. (AP Photo/The Journal-Star, Gwyneth Roberts, File)
In this April 18, 2014 photo, John Eaton, brewing manager at Widmer Brothers in North Portland, Ore., works on a morning batch at the brewery. The brewery produces 2,500 barrels of beer a day, and tons of spent grain that it distributes to area dairy farmers. But under a Food and Drug Administration proposal, that relationship could be threatened. The FDA is trying to tighten the country's food safety network. The proposal would classify companies that distribute spent grain to farms as animal feed manufacturers, imposing new sanitation requirements and possibly forcing them to dry and package the material before distribution, The Oregonian reported. (AP Photo/The Oregonian, Lynne Terry)
In this April 18, 2014 photo, John Eaton, brewing manager at Widmer Brothers in North Portland, works on a morning batch at the brewery. (AP Photo/The Oregonian, Lynne Terry)
The U.S. Food and Drug Administration said Thursday that it will revise proposed livestock feed rules after hearing objections about the potential cost from brewers who sell grain leftover from making beer to ranchers and dairy farmers.