Tesco and Sainsbury's reported first-quarter trading updates this week and both UK retailers faced questions over their prospects for the rest of the year. US meat giant Smithfield Foods also faced analysts after it posted its full-year results, with CEO Larry Pope arguing Wall Street does not value the company highly enough. Elsewhere, Arla announced a tie-up in China, PepsiCo made Mexico the first market for its global dips venture and UK firm Premier Foods plc offloaded another of its businesses.