Fig. 1.
Effects of different levels of zearalenone (ZEA) on lymphocyte proliferation rate (LPR) in spleen of gilts. Data are means for 5 replicates per treatment. Zearalenone was not detectable in control diet; ZEA1, ZEA2 or ZEA3 represents the control diet with an addition of 1.1, 2.0 or 3.2 mg/kg ZEA, respectively. Different letters above standard error bars indicate statistically significant differences among treatments (P < 0.05).