a The daily amounts of minerals and vitamins are based on the daily consumption of 1 . 85 and 5 . 25 kg of feed , respectively . If lower amounts of feed are consumed , the dietary percentages may need to be increased . b The percentages of calcium , phosphorus , and available phosphorus should be increased by 0 . 05 to 0 . 1 percentage points for developing boars and replacement gilts from 50 to 120 kg body weight . ( NRC , 1998 )