PRL and systemic lupus erythematosus: In Trial 3, compared with the control group, dietary SLE supplementation increased (P < 0.05) sow serum glucose (GLU), triglyceride (TG), total cholesterol (TC), prolactin (PRL) and interleukin-10 (IL-10) concentrations, and total superoxide dismutase (T-SOD) activities at the farrowing, and increased (P < 0.05) sow serum prolactin, leptin, and insulin concentrations at d 14 of lactation.