Stomach Ileum
32d Low Medium High Low Medium High
Total reads 1394 (±153.1)a 1805 (±289.4)b 2202.5 (±490.3)b 616.8 (±350.2) 677.3 (±235.7) 553.0 (±242.3)
Lactobacilliales 429.3 (±70.5)b 448.5 (±167.8)b 257.0 (±134)a 166.5 (±40.1)b 183.0 (±77.0)b 87.5 (±41.8)a
Bacteroidales 350.7 (±72.9)b 291.7 (±139.5)b 51.8 (±13.3)a 137.4 (±93.4) 76.5 (±104.0) 52.7 (±56.4)
Clostridiales 13.3 (±11.0) 10.5 (±7.3) 21.0 (±12.1) 13.2 (±15.1)a 9.5 (±5.4)a 280.5 (±107.2)b
Enterobacteriales 8.3 (±7.57)ab 4.2 (±1.5)a 23.5 (±17.8)b 23.1 (±12.1)ab 15.4 (±12.9)a 50.0 (±24.8)b
Selenomonadales 220.2 (±169.8) 269.2 (±150.4) 292.3 (±144.5) 89.7 (±83.3) 177.7 (±109.3) 63.2 (±98.6)
53d            
Total reads 1919.9 (±321.8) 1391.9 (±611.2) 1413.3 (±429) 655.6 (±297.9) 833.3 (±178.6) 702.6 (±304.2)
Lactobacilliales 479.5 (±283.9)b 496.7 (±292.5)b 197.4 (±62.5)a 178.0 (±166.9)b 173.8 (±187.9)b 13.3 (±6.9)a
Bacteroidales 250.4 (±98.2) 275.7 (±137.4) 261.2 (±99.1) 37.0 (±43.6) 9.6 (±4.8) 14.5 (±10.1)
Clostridiales 21.4 (±11.8)a 20.8 (±12.6)a 68.8 (±44.4)b 84.2 (±46.7)a 41.7 (±8.0)a 290.3 (±38.7)b
Enterobacteriales 25.3 (±23.3)a 34.7 (±25.0)a 99.4 (±41.2)b 47.0 (±28.0) 67.2 (±26.0) 55.8 (±20.3)
Selenomonadales 89.9 (±29.4)a 116.6 (±26.2)a 226.6 (±34.8)b 50.8 (±50.2) 24.0 (±12.4) 95.5 (±58.3)
a,b = significantly different within rows and intestinal segment (Mann-Whitney-U test; P ≤ 0.05)
Table 1: Chao1 diversity index of the dominant bacterial order in the small intestine of piglets fed diets with different dietary ZnO concentrations.