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. 2022 Jul 4;13:919431. doi: 10.3389/fmicb.2022.919431

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Copyright © 2022 Liu, Lu, Sun, Jia, Zhao, Chen, Kim, Zhang and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The effects of tryptophan supplementation on antioxidant capacity in colonic mucosa of piglets. MDA, malondialdehyde; GSH-Px, glutathione peroxidase; T-SOD, total superoxide dismutase; CAT, catalase; CON, control group; LPS-CON, piglets challenged with lipopolysaccharide; LPS-Trp, piglets fed with tryptophan and challenged with lipopolysaccharide. (A) The content of MDA. (B) The activity of GSH-Px. (C) The activity of T-SOD. (D) The activity of CAT. Values are shown as mean ± standard error (n = 6). 0.05 ≤ P < 0.10 was considered as a tendency. *P < 0.05; **P < 0.01.