Strain on the consumer is eating into its growth.Packaged-foods company Conagra Brands (CAG -1.72%) had a mixed quarter and provided disappointing guidance for its new fiscal year. Investors reacted by sending shares of Conagra down as much as 5%, before they rallied to be down only 2% as of 1:30 p.m. ET on Thursday.Price inflation is eating into salesConagra -- whose brands include Birds Eye, Duncan Hines, Healthy Choice, Slim Jim, and Reddi-wip -- reported adjusted earnings of $0.61 per share in its fisca ...