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Table 5 Effects of dietary tryptophan levels and diquat injection on tryptophan 2,3-dioxygenase activity in the liver of the weaned piglets

From: The effect of dietary tryptophan levels on oxidative stress of liver induced by diquat in weaned piglets

Item - diquat + diquat SEM P
  Trp 0.18% Trp 0.30% Trp 0.45% Trp 0.18% Trp 0.30% Trp 0.45%   Trp diquat Trp × diquat
TDO activity, nmol/mg protein·h 2.85c 3.24b 3.34b 3.07bc 3.72a 3.46ab 0.17 < 0.05 0.07 < 0.05
  1. +diquat, intraperitoneal injection diquat; − diquat, intraperitoneal injection of sterile 0.9% NaCl solution; Trp 0.18%, dietary tryptophan level 0.18%; Trp 0.30%, dietary tryptophan level 0.30%; Trp 0.45%, dietary tryptophan level 0.45%; TDO, tryptophan 2,3-dioxygenase.
  2. a, b, cMean values with unlike superscript letters were significantly different (P < 0.05).
  3. (Mean values with their pooled standard errors, n = 6).