Figure 4.

Loin eye area in pigs fed diets with increasing BA intake. Loin eye area, cm² = −0.14 × BA intake × BA intake + 2.29 × BA intake + 35.4 (Max: 44.7 cm² at 8.1 g/d), R² = 0.22; P value of the overall model: <0.05, P value of the intercept: <0.05, and P value of BA intake × BA intake: <0.05; P value of BA intake: <0.05. The optimal BA level for the loin eye area in pigs was 0.59% calculated based on overall ADFI (1,357 g/d). The experimental unit was a pen (1 pig representing the median BW was selected in each pen) and the number of observations was 33.