Table 1

Growth of six bacterial species in egg white of GF, SPF and conventional hens
Bacterial species Germ free hens Specific pathogen free hens Conventional hens P value
Staphylococcus aureus** 7.4 ± 0.7 a* 6.4 ± 0.7 b 6.1 ± 0.5 b <0.001
Streptococcus uberis 7.3 ± 0.3 a 5.0 ± 0.6 b 4.7 ± 0.8 b <0.001
Listeria monocytogenes 3.1 ± 0.1 3.0 ± 0.2 3.0 ± 0.1 0.91
Salmonella Enteritidis 7.5 ± 0.2 7.7 ± 0.3 7.4 ± 0.2 0.11
Salmonella Gallinarum 3.2 ± 0.2 3.3 ± 0.2 3.1 ± 0.1 0.18
Escherichia coli 10.6 ± 0.6 10.6 ± 0.6 10.4 ± 0.3 0.48

*mean areas under the growth curves ± standard deviation, n = 10 Means with different letters are different (p < 0.05). Data were analysed using one-way ANOVA followed by the Bonferroni-Dunn test.

**Staphylococcus aureus D8 618.29, Streptococcus uberis 3029C MC, Listeria monocytogenes strain EGDe, Salmonella Gallinarum 229 K and Salmonella enterica. Enteritidis ATCC 13076 were provide d by INRA (Nouzilly) and Avian Escherichia coli CIRMBP-0096 was provided by the International Center of Microbial Resources dedicated to Pathogenic Bacteria (Nouzilly).

Bedrani et al.

Bedrani et al. BMC Microbiology 2013 13:128   doi:10.1186/1471-2180-13-128

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