Table 3 Haugh unit of eggs, faecal pH, lactic acid bacteria and Enterobacteriaceae counts following treatments supplemented with different postbiotic metabolite combinations

Haugh unit

 24

68.89 ± 0.81

69.24 ± 0.72

68.26 ± 0.85

68.62 ± 0.78

 26

67.13 ± 0.93

67.42 ± 0.94

67.34 ± 0.86

66.94 ± 0.79

 28

67.77 ± 0.93

67.80 ± 0.95

67.32 ± 0.86

66.75 ± 0.75

 30

73.32 ± 0.87

72.97 ± 0.66

73.36 ± 0.74

72.82 ± 0.60

 32

73.50 ± 0.82

73.29 ± 0.63

73.17 ± 0.87

72.92 ± 0.71

pH

 24

7.04 ± 0.03

7.05 ± 0.04

7.01 ± 0.05

7.03 ± 0.03

 26

6.98 ± 0.04

7.02 ± 0.03

6.99 ± 0.03

7.01 ± 0.04

 28

7.02 ± 0.04^a

6.98 ± 0.04^a

7.00 ± 0.02^a

6.82 ± 0.05^b

 30

6.98 ± 0.05^a

6.86 ± 0.04^b

6.87 ± 0.05^b

6.78 ± 0.03^c

 32

6.94 ± 0.06^a

6.65 ± 0.05^b

6.54 ± 0.04^c

6.52 ± 0.05^c

Lactic acid bacteria counts (log CFU/g)

 24

6.45 ± 0.03

6.48 ± 0.06

6.42 ± 0.06

6.41 ± 0.07

 26

6.39 ± 0.11

6.32 ± 0.07

6.31 ± 0.12

6.34 ± 0.08

 28

6.48 ± 0.12

6.57 ± 0.10

6.53 ± 0.11

6.60 ± 0.19

 30

6.56 ± 0.18^b

6.61 ± 0.16^b

6.68 ± 0.14^b

6.92 ± 0.11^a

 32

6.62 ± 0.16^c

6.91 ± 0.18^b

6.68 ± 0.13^c

7.28 ± 0.10^a

 34

6.45 ± 0.21^c

6.88 ± 0.18^b

6.90 ± 0.10^b

7.32 ± 0.12^a

Enterobacteriaceae counts (log CFU/g)

 24

7.43 ± 0.08

7.47 ± 0.06

7.51 ± 0.05

7.56 ± 0.09

 26

7.50 ± 0.05

7.52 ± 0.06

7.51 ± 0.06

7.46 ± 0.07

 28

7.38 ± 0.10

7.41 ± 0.18

7.32 ± 0.14

7.25 ± 0.12

 30

7.16 ± 0.08^a

6.89 ± 0.09^b

6.78 ± 0.10^b

6.83 ± 0.07^b

 32

6.92 ± 0.16^a

6.33 ± 0.11^c

6.55 ± 0.08^b

6.31 ± 0.12^c