Navigation Links
Antibiotic-resistant pathogens persist in antibiotic-free pigs
Date:9/17/2012

Researchers from North Carolina State University have found identical strains of antibiotic-resistant Campylobacter coli (C. coli) in both antibiotic-free (ABF) and conventionally raised pigs. This finding may indicate that these antibiotic-resistant pathogens can persist and thrive in the environment, regardless of antimicrobial usage by pork producers.

Dr. Siddhartha Thakur, assistant professor of population health and pathobiology, had previously found that antibiotic-resistant C. coli, a leading cause of foodborne illness in the U.S., was present in both ABF-certified and conventionally raised pigs. The pathogen was present in both groups in all facilities from breeding to processing. Thakur wanted to determine whether the C. coli that he found in each group was genetically the same, in order to see if the presence or absence of antimicrobial usage had an effect on the pathogen's genetic makeup.

The rise of antibiotic-resistant pathogens like C. coli is a concern for the food animal industry. Some pig farms have switched to raising ABF pigs in an attempt to get away from the conditions that facilitated antibiotic resistance in the first place. The hope is that once the selection pressure in the form of antimicrobial use on C. coli to retain antibiotic resistance decreases, the pathogen will lose its resistance.

Over several years, Thakur and Ph.D. student Macarena Quintana-Hayashi collected thousands of samples from pigs and their surrounding environments, and performed a genetic analysis on 200 representative isolates of C. coli, to see if these strains were similar. They found that the Campylobacter populations in the two swine production systems (conventional and ABF) were in fact the same. Since the different pig populations never came into contact, the researchers concluded that the environment must be playing a large role in the continuing survival of antibiotic-resistant C. coli.

Thakur's findings appear online in PLoS One.

"In the case of ABF pigs, the environment plays an important role in their exposure to these resistant strains," Thakur says. "If the environment itself, and not the pig, is serving as a reservoir for C. coli, then we will most probably continue to find resistant bacterial populations, regardless of a producer's antimicrobial use."


'/>"/>

Contact: Tracey Peake
tracey_peake@ncsu.edu
919-515-6142
North Carolina State University
Source:Eurekalert

Related biology news :

1. Bees self-medicate when infected with some pathogens
2. College students work to sterilize air, kill pathogens on buses
3. Antitoxin strategy may help target other pathogens
4. Differences in the genomes of related plant pathogens
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/6/2017)... -- RAM Group , Singaporean based technology ... biometric authentication based on a novel  quantum-state ... perform biometric authentication. These new sensors are based on a ... Group and its partners. This sensor will have widespread ... security. Ram Group is a next generation sensor ...
(Date:4/13/2017)... 2017 UBM,s Advanced Design and Manufacturing event ... emerging and evolving technology through its 3D Printing and ... alongside the expo portion of the event and feature ... focused on trending topics within 3D printing and smart ... event will take place June 13-15, 2017 at the Jacob ...
(Date:4/11/2017)... 11, 2017 NXT-ID, Inc. (NASDAQ:   ... announces the appointment of independent Directors Mr. Robin D. ... Board of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , ... forward to their guidance and benefiting from their considerable expertise ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... ... ... Corporate Directors Forum is recognizing six San Diego directors for their extraordinary ... The awards will be presented Thursday, September 7th, from 6 to 9 p.m. at ... significantly positive contributions in the boardrooms of some of our region’s most respected and ...
(Date:7/18/2017)... ... ... G-CON today announced that it has received Notices of ... 14/858,857 and 13/669,785 both entitled Modular, Self-Contained, Mobile Clean Room. The U.S. Patent ... G-CON’s R&D investments and validate the G-CON platform as a novel way to ...
(Date:7/17/2017)... ... 2017 , ... The Academy of Model Aeronautics (AMA) will host Aviation Adventure ... take place from 9 a.m. to 2 p.m. at the International Aeromodeling Center in ... Aviation Adventure Day will be packed with entertaining activities for the entire family. Attendees ...
(Date:7/17/2017)... ... July 17, 2017 , ... ... has developed and intends both to manufacture and sell reagents used for diagnostic ... Capital Market. , Headquartered in Sandy, Utah, Co-Diagnostics’ intellectual property and technologies are ...
Breaking Biology Technology: