TNF and metabolic syndrome: LPS, ROS, MDA, and Keap1 were significantly positively correlated with inflammatory cytokines (IL-1β, COX2, TNF-α, IL-6, and iNOS), metabolic syndrome (LDL-C, T-CHO, TG, and BUN), ABW, and ADG at 45 d, 60 d, and 90 d of sample collection.