Reference | YSMNBAK9 (82)

No DOI

Antibiotic-resistant commensal Escherichia coli are less frequently isolated from poultry raised using non-conventional management systems than from conventional broiler.

Pesciaroli, M.; Magistrali, C. F.; Filippini, G.; Epifanio, E. M.; Lovito, C.; Marchi, L.; Maresca, C.; Massacci, F. R.; Orsini, S.; Scoccia, E.; Tofani, S.; Pezzotti, G. (No Location)

None (2020)

Reference

The study aimed to compare the prevalence and type of AR in E. coli isolated from the gut of chickens raised conventionally, with those in organic and AF flocks. The sampled birds belonged to and were processed by the same company, and originated from the same region in Italy. We hypothesized that the AR E. coli would be isolated less frequently from birds raised in non-conventional systems than those raised conventionally

The number of samples to be collected from each farm was calculated using the following parameters: 50% expected prevalence, 20% precision, and 95% confidence level (Stata 11.2, StataCorp, College Station, TX, USA). From February 2017 to January 2018, samples were taken, as expected for sampling, from at least 26 animals per farm. Overall, 855 animals were tested (indiscriminately, male or female).

AST Method: Agar Dilution

Reference explicitly reports AST breakpoints: None

Reference reports using a MIC table: None

Is Excluded: False

Country Sub-Region Sub-Region Detail
ID Note Resolution

Factors

Title Host Host Production Stage Description ROs
Production Type Chicken Broilers Farm antibiotic-free vs. conventional 14
Production type Chicken Broilers Farm Organic vs. conventional 14