The effect of reduced feed pH, phytase addition and their interaction on mineral utilization in pigs

•Effect of formic acid and phytase was studied in pigs fed a high phytate-P diet.•Phytase improved total tract digestibility of Ca and P and bone mineralization.•There was no interaction effect between phytase and pH reduction in the stomach.•Formic acid addition improved growth, FCR and total digestibility of Ca, Fe and Mg.