Figure 3

Fitted broken-line plot of ATTD of phosphorus as a function of dietary phytase level in growing pigs (Exp. 2) with observed treatment mean values (n = 8 observations per treatment mean). The minimal dietary phytase level determined by broken-line analysis using least squares methodology was 801 FYT/kg (Y plateau = 69.1; slope below breakpoint = −0.036; Adjusted R² = 0.947).