Tyson Foods has named Tom Hayes president, a move reflecting the company’s increased emphasis on branded, packaged foods. Chief Executive Donnie Smith previously held the president title. Mr. Smith said in a statement that Mr. Hayes, who was chief commercial officer, has “played a key role in creating a united company and in our continued development of our branded products.” Mr. Hayes was chief supply chain officer at Hillshire Brands at the time of Tyson’s $7.7 billion purchase of Hillshire in 2014. Tyson picked up such brands as Jimmy Dean sausages and Ball Park hot dogs in that deal, enhancing its position in higher-margin prepared foods.