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Volume 9, Number 4—April 2003

Dispatch

Antimicrobial Growth Promoters and Salmonella spp., Campylobacter spp. in Poultry and Swine, Denmark

Mary C. Evans*Comments to Author  and Henrik C. Wegener*
Author affiliations: *Danish Veterinary Institute, Copenhagen, Denmark

Main Article

Table 2

Comparison of the average prevalence of Salmonella and Campylobacter in broiler flocks, chicken meat, swine herds, and pork products before and after withdrawal of antimicrobials for use as growth promoters


Period 1a
mean (range)
Period 1 standard deviation
Period 2b
mean (range)
Period 2 standard deviation
p value
Salmonella
Broilers (antemortem)
14.4 (3.7–33.6)
8.3902
2.4 (0.2–5.8)
1.3215
<0.0001
Broilers (postmortem)
17.0 (8.1–38.8)
7.9125
4.9 (0.7–24.9)
5.0493
<0.0001
Swine
5.0 (4.2–6.2)
0.5904
3.3 (2.5–4.4)
0.5347
<0.0001
Pork
1.1 (0.5–1.8)
0.3895
0.8 (0.4–1.5)
0.2839
0.0290
Campylobacter





Broilers (antemortem) 35.3 (11.4–64.8) 16.6290 40.8 (18.0–77.0) 16.1185 0.2470

aBefore withdrawal of antimicrobial growth promoters.
bAfter withdrawal of antimicrobial growth promoters.

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