Impact of Veterinary Feed Directive Rules Changes on the Prevalence of Antibiotic Resistance Bacteria Isolated from Cecal Samples of Food-Producing Animals at US Slaughterhouses.

Conversely, there was an increasing trend in the proportion of tetracycline-resistant Salmonella spp. in chickens ( p < 0.0001) ( Figure 1 a).

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Temporal Trends in the Proportion of Antibiotic-Resistant Bacteria There was a decreasing trend in the proportion of tetracycline-resistant Salmonella spp. in cattle ( p < 0.0001), with a distinct downward trend observed after 2018 ( Figure 1 a).

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