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Table 3 Virulence properties of crp- deleted mutant strain of Salmonella enterica serotype Gallinarum biovar gallinarum (G9) evaluated by presence of colony forming units (CFU) in spleen and liver following oral infection.

From: Effects of crp deletion in Salmonella enterica serotype Gallinarum

Strain

Log10 CFU in spleen

Log10 CFU in liver

G9 wild type

7.00a

7.00a

G9Δcrp

4.30 (± 0.63)b

4.06 (± 0.62)b

G9Δcrp +pSD110

1.72 (± 0.47)c

1.56 (± 0.31)c

J91 wild type

7.00 a

Nd

J91Δcrp

4.05 (± 2.07)

Nd

J91Δcrp +pSD110

<2.00

Nd

  1. a – all birds in this group were sacrificed humanely due to clinical signs of disease. The log10 CFU was not determined and for statistical reasons these birds were given a value of log10 7.
  2. a,b,c: mean CFU was statistically different by pair wise comparison between groups (p < 0.05)
  3. ND: not done.