Health scares are chasing meat-eaters into pork, Jim Cramer said on CNBC's "Stop Trading!" segment Monday. Companies like Premium Standard Farms ( PORK) and Smithfield Foods ( SFD) "don't have bird flu and don't have mad cow," Cramer said. The shares "haven't done all that much" compared with the recent pain in Conagra ( CAG), and should be "on traders' sheets" at these levels. Cramer said Winnebago ( WGO) makes sense as a play on Warren Buffett, whose purchase of Clayton Homes should be viewed as a "beachhead" position. "Isn't this a natural place for Buffett to augment one of his holdings?" A similar play is Cavco ( CVCO). "The group was down really badly last week. I wouldn't sell these stocks anymore," Cramer advised.