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Study Shows Switching from Conventional to Organic Practices Reduces Drug Resistant Bacteria

Antibiotic use in conventional animal food production in the United States has created public health concern because it has been shown to contribute to the development of antibiotic-resistant bacteria that can potentially spread to humans. A new study, led by Dr. Amy R. Sapkota of the University of Maryland School of Public Health, provides data demonstrating that poultry farms that have transitioned from conventional to organic practices and ceased using antibiotics have significantly lower levels of drug-resistant enterococci bacteria.

From medicalxpress.com:

Antibiotic use in conventional animal food production in the United States has created public health concern because it has been shown to contribute to the development of antibiotic-resistant bacteria that can potentially spread to humans. A new study, led by Dr. Amy R. Sapkota of the University of Maryland School of Public Health, provides data demonstrating that poultry farms that have transitioned from conventional to organic practices and ceased using antibiotics have significantly lower levels of drug-resistant enterococci bacteria.

The study, published in (online August 10, 2011), is the first to demonstrate lower levels of on newly organic farms in the United States and suggests that removing antibiotic use from large-scale U.S. can result in immediate and significant reductions in for some bacteria.

"We initially hypothesized that we would see some differences in on-farm levels of antibiotic-resistant enterococci when poultry farms transitioned to organic practices. But we were surprised to see that the differences were so significant across several different classes of antibiotics even in the very first flock that was produced after the transition to organic standards," explains Sapkota, an Assistant Professor with the Maryland Institute for Applied Environmental Health. "It is very encouraging."

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