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Table 2 Variation in the bacterial community structure between high and low-performing farms of company A and B across the production cycle (7, 14, 21, 28 and 35) in excreta and dust samples using permutational multivariate analysis of variance (PERMANOVA)

From: Microbial taxa in dust and excreta associated with the productive performance of commercial meat chicken flocks

Sample type Company Chicken Age (days) PERMANOVA PERMDISP
Pseudo-F R2 P value P value
Excreta A All ages 6.84 0.05 0.001 0.33
   7 6.03 0.20 0.001 0.90
   14 3.49 0.13 0.003 0.87
   21 2.83 0.11 0.004 0.65
   28 3.16 0.12 0.001 0.16
   35 2.17 0.13 0.007 0.81
  B All ages 3.39 0.02 0.003 0.97
   7 1.43 0.05 0.10 0.62
   14 4.67 0.18 0.001 0.14
   21 2.01 0.08 0.03 0.19
   28 2.77 0.10 0.001 0.36
   35 1.40 0.04 0.10 0.77
Dust A All ages 5.54 0.08 0.001 0.02
   7 2.65 0.25 0.08 0.75
   14 2.83 0.18 0.001 0.61
   21 2.78 0.17 0.002 0.07
   28 1.97 0.12 0.04 0.004
   35 2.47 0.22 0.007 0.005
  B All ages* 2.97 0.05 0.01 0.48
   14 1.78 0.14 0.11 0.02
   21 1.66 0.11 0.07 0.21
   28 3.22 0.24 0.009 0.003
   35 2.11 0.13 0.02 0.08
  1. PERMDISP, permutational analyses of multivariate dispersions
  2. *Dust samples collected on day 7 from company B were excluded due to the small sample
  3. Values in bold indicate statistical significance (p < 0.05)