High Prevalence of Cefotaxime Resistant Bacteria in Grazing Beef Cattle: A Cross Sectional Study

Frontiers in Microbiology
Sarah MarklandKwangCheol Casey Jeong

Abstract

Although the over-use of antibiotics during food animal production is a potential driver of antimicrobial resistant microorganisms (ARMs), a high prevalence of cefotaxime resistant bacteria (CRB) has been observed in grazing animals raised without antibiotic supplementation. In this cross-sectional study, the prevalence and concentration of CRB in beef cattle on grazing farms were investigated. Fecal samples from the recto-anal junction of cattle (n = 840) and environmental samples (n = 258) were collected from 17 farms in North and Central Florida in the United States, and a survey of farm characteristics, animal husbandry practices, and antibiotic usage was conducted. CRB were detected in fecal samples from 47.4% of all cattle, with the prevalence ranging from 21.1 to 87.5% on farms, and significantly higher (P < 0.001) in calves compared to adult cows (54.1 vs. 41.8%). Environmental samples had a higher prevalence than fecal samples (P < 0.001), with CRB detected in 88.6% of water, 98.7% of soil, and 95.7% of forage samples. Compared to the concentration (log CFU/g) of CRB in fecal samples (2.95, 95% CI: 2.89, 3.02), the concentration of CRB was higher (P < 0.001) in soil and forage samples (5.37, 95% CI: 5.16, 5.57) and low...Continue Reading

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Citations

Feb 2, 2021·Animal : an International Journal of Animal Bioscience·M Odintsov VaintrubG Vignola
Jun 29, 2021·EFSA Journal·UNKNOWN EFSA Panel on Biological Hazards (BIOHAZ)Luisa Peixe
Nov 11, 2021·Environmental Science and Pollution Research International·Vijay Laxmi ShrivasShilpi Sharma

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Methods Mentioned

BETA
PCR

Software Mentioned

R package
USEARCH
STATA
tBLAST
ArcMap
Statistical Package for the Social Sciences ( SPSS )
Qualtrics
QIIME
phyloseq

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