Strong growth in sales volumes continues to drive performance for Northern Ireland-based poultry processor Moy Park as the group adjusts to lower poultry prices on supermarket shelves, particularly given the continued price war between retailers in the UK.Full-year revenues for 2015 increased by a steady 1.4% to more than £1.4bn (€1.83bn), all of which was driven by robust growth in sales volumes of 6.7%. Sales volume growth was strongest in its UK and Ireland market (+8%), with sales volumes to continental Europe increasing 4% year-on-year.