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Table 2 Growth performance of weaned pigs fed diets supplemented with Bacillus subtilis

From: Dietary supplementation of Bacillus subtilis influenced intestinal health of weaned pigs experimentally infected with a pathogenic E. coli

Itemd E. coli challenge SEM P-value
Negative control Positive control Low dose Bacillus subtilis High dose Bacillus subtilis Diet Lin.e Quad.e
BW, kg
 d – 7f 6.76 6.76 6.64 6.73 0.23 0.73 0.82 0.32
 d 0f 7.98 7.78 7.84 7.91 0.59 0.87 0.61 0.99
 d 5 PIg 9.52a 8.41b 8.83ab 9.06ab 0.60 0.039 0.086 0.76
 d 11 PIg 12.93 11.02 11.92 12.56 1.67 0.14 0.084 0.86
ADG, g
 d − 7 to 0f 174 146 167 168 77.33 0.83 0.50 0.72
 d 0 to 5 PIf 308a 125c 193bc 230ab 40.79 < 0.01 0.036 0.71
 d 5 to 11 PIg 426 373 435 452 129.5 0.73 0.31 0.73
 d 0 to 11 PIg 416a 272b 340ab 375ab 74.45 0.057 0.058 0.71
ADFI, g
 d − 7 to 0f 308 311 303 271 57.66 0.74 0.33 0.73
 d 0 to 5 PIf 572a 365b 386b 423ab 58.29 < 0.01 0.21 0.85
 d 5 to 11 PIg 637 585 566 735 96.61 0.24 0.095 0.24
 d 0 to 11 PIg 617 507 459 603 48.76 0.11 0.16 0.13
G:F
 d − 7 to 0f 0.58 0.42 0.50 0.57 0.171 0.13 0.051 0.99
 d 0 to 5 PIf 0.52 0.35 0.45 0.52 0.078 0.32 0.11 0.82
 d 5 to 11 PIg 0.67 0.61 0.74 0.60 0.150 0.47 0.90 0.14
 d 0 to 11 PIg 0.68a 0.52b 0.71a 0.59ab 0.127 0.084 0.36 0.034
  1. a-cMeans without a common superscript are different (P < 0.05); bold P values denote statistical significance at the P < 0.05 
  2. dBW body weight, ADG average daily gain, ADFI average daily feed intake, G:F gain:feed, PI post inoculation
  3. eLinear and quadratic effects of adding Bacillus subtilis to the control diet in pigs infected with F18 E. coli
  4. fEach least squares mean represents 12 observations
  5. gEach least squares mean represents 6 observations