Figure 1.

Linear and quadratic broken line regression analysis for the standardized ileal digestible (SID) Trp:Lys ratio on lactating primiparous and multiparous sow ADFI. The BIC for the linear model (red line) was 2,994 with an estimate of the ratio at 14.0 and the BIC value for the quadratic analysis (green line) was 2,986 with the ratio estimate of 17.6.