Chances are consumers are unaware of the dangers hiding in poultry;
however, mounting evidence suggests the poultry industry's use of
antibiotics induces antibiotic resistance among the food-borne bacteria
that prey on humans. One such antibiotic-resistant strain: Campylobacter,
a pathogen common to chicken products.
Campylobacter is responsible for inducing food poisoning in more
than 1 million Americans every year and is considered a growing
health threat. According to a study by Johns Hopkins, chickens raised
without the use of antibiotics are less likely to have antibiotic-resistant
strains of Campylobacters lurking about.
Whose Chicken?
Researchers involved in the study paid particular attention to
fluoroquinolones (FQs), a class of antimicrobials used to control
the bacterium Escherichia coli in broiler chickens.
They tested chicken products from conventional manufacturers Tyson
and Perdue, and antibiotic-free producers Bell & Evans and Eberly,
all of whom claimed to have discontinued use of FQs.
The results showed:
-
Conventional chicken products were up to 460 times more likely
to carry antibiotic-resistant strains than the antibiotic-free
chicken products.
-
Resistance to FQs in conventionally grown chicken persisted
for one year after its industrial use was terminated.
-
Chicken producers who refrained from using FQs reduced the
likelihood of Campylobacter contamination in their products.
So what do these findings mean?
In light of the evidence, researchers suggested that even without
the use of antibiotics, resistant populations may remain rampant
over time. Moreover, the results highlight the need to further improve
poultry house cleaning and disinfection.
Environmental
Health Perspectives May 2005;113(5):557-560
|