The invention relates to the use of at least one bacterial phytase in combination with one or more protease(s) in animal feed for improving weight gain and/or Feed Conversion Ratio (FCR), wherein the phytase is administered in one or more of the following amounts (dosage ranges): 1,000 FYT/kg feed, 2,000 FYT/kg feed 3,000 FYT/kg feed and wherein the protease is administered in one of the following amounts (dosage ranges): 10,000 units/kg feed, 11,000, 12,000, 13,000, 14,000, 15,000, 16,000, 17,000, 18,000, 19,000, 20,000 units/kg feed.
