Fig. 2

Fitted broken-line of the ratio of unsaturated to saturated fatty acids (U:S) of oil versus standard ileal digestibility (SID) of saturated fatty acids (SFA). Each data point represents least squares means of 6 observations. Each regression model shows the SID of SFA (y) relative to U:S (x). The linear broken-line model for the SID of SFA indicated that the breakpoint for U:S of oil was 4.14 based on the following equation: y = 95.90 – 12.65 × (2.91 – x) where x is less than 2.91 (R² = 0.98, P < 0.01)