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Table 6 Effects of tannic acid (TA) on intestinal morphology in weaned piglets

From: Tannic acid prevents post-weaning diarrhea by improving intestinal barrier integrity and function in weaned piglets

Item Added tannic acid, % SEM P-value
  0 0.2 1.0 ANOVA Linear Quadratic
Duodenum
 Villus height, μm 354.4 337.6 357.2 14.25 0.585 0.642 0.362
 Crypt depth, μm 182.4a 148.0b 175.6a 8.08 0.021 0.654 0.007
 Villus height: Crypt depth 1.96b 2.30a 2.04b 0.08 0.030 0.767 0.010
 Mucosal thickness, μm 794.6 747.7 847.9 40.96 0.255 0.197 0.296
 Intestinal wall thickness, mm 1.40 1.38 1.56 0.06 0.124 0.053 0.545
Jejunum
 Villus height, μm 357.8 386.4 399.9 15.09 0.167 0.105 0.319
 Crypt depth, μm 161.3 163.9 169.7 9.88 0.827 0.548 0.945
 Villus height: Crypt depth 2.24 2.38 2.39 0.13 0.674 0.536 0.533
 Mucosal thickness, μm 683.9 657.2 646.2 31.77 0.695 0.479 0.648
 Intestinal wall thickness, mm 1.03 1.00 1.04 0.04 0.738 0.667 0.523
Ileum
 Villus height, μm 353.6a 385.3a 288.9b 21.11 0.017 0.012 0.124
 Crypt depth, μm 176.7 166.1 140.9 10.05 0.063 0.021 0.794
 Villus height: Crypt depth 2.01 2.38 2.04 0.15 0.195 0.626 0.085
 Mucosal thickness, μm 542.0 533.2 593.0 63.85 0.777 0.508 0.821
 Intestinal wall thickness, mm 1.05 1.15 1.13 0.08 0.674 0.625 0.465
  1. CON, piglets receiving a basal diet; CON + 0.2% TA, piglets receiving a basal diet supplemented with 0.2% TA; CON + 1.0% TA, piglets receiving a basal diet supplemented with 1.0% TA
  2. a,bMean values with unlike superscript letters were significantly different (P < 0.05)