Fig. 3

Fitted broken-line of the ratio of unsaturated to saturated fatty acids (U:S) of oil versus standard ileal digestibility (SID) of unsaturated fatty acids (UFA). Each data point represents least squares means of 6 observations. Each regression model shows the SID of UFA (y) relative to U:S (x). The linear broken-line model for the SID of UFA indicated that the breakpoint for U:S of oil was 3.84 based on the following equation: y = 98.88 – 1.14 × (3.84 – x) where x is less than 3.84 (R² = 0.85, P < 0.01)