supplementation also affected the hepatic expression of antioxidant enzymes, either inducing a down-regulation (glutathione reductase, gr; peroxiredoxin 1, prdx1) or a reverse response to bacterial infection (glutathione peroxidase 4, gpx4; peroxiredoxin 5, prdx5) in comparison to CTRL. The gene discussed is PRDX1; the disease is bacterial infectious disease.