Fig. 1.

Effect of dietary lycopene supplementation on the mRNA levels of antioxidant enzyme related genes in longissimus dorsi (LD) muscle of finishing pigs. Real-time quantitative PCR analyzed the mRNA expressions of superoxide dismutase 1 (SOD1), superoxide dismutase 2 (SOD2), catalase (CAT), glutathione peroxidase 1 (GPX1), glutathione S-transferase (GST), glutathione reductase (GR), nuclear factor erythroid 2-related factor 2 (Nrf2) and Kelch-like ECH-associated protein 1 (Keap1). Data are presented as the mean and SEM (n = 6). ^{a, b, c} Bar with different letter indicates significant difference (P < 0.05).