What's New ? - 2022

What's New ? - 2022

Canada: 2020 Veterinary antimicrobial report

24 November, 2022

Between 2019 and 2020, the overall sales of antimicrobials (kg) intended for use in production animals increased by 6.5% and increased by 7.5% when accounting for the number of animals and their weights (animal biomass). During the same timeframe, sales of antimicrobials (kg) for use in poultry decreased; In 2020, Canada distributed the sixth highest quantity of antimicrobials intended for use in production animals compared to the 2020 data from 31 European countries.
Poultry: the trend in resistance to 3 or more antimicrobial classes in E. coli decreased since 2016, including between 2019 and 2020. At the same time, overall AMU (total nDDDvetCA/1,000 animal-days at risk) decreased for broiler chicken and turkeys since 2016. This decrease occurred without any substantive reported changes to flock mortality, and reporting of diagnoses of diseases decreased or remained stable.
Broiler chickens: Resistance to ceftriaxone in E. coli and Salmonella decreased. However, there was an increase in resistance to nalidixic acid in Salmonella and increase in ciprofloxacin resistance in Campylobacter since 2018. For AMU, the number of antimicrobial classes reportedly used decreased from 11 to 9 classes (consistent with the timing of the elimination of preventive uses of Category II antimicrobials). Most antimicrobials were used for the prevention of enteric diseases. The diagnoses of septicemia and enteric disease decreased, while the diagnoses of yolk sac infection and miscellaneous bacterial diseases (mixed causes) increased, and diagnoses of respiratory disease remained stable.
Turkeys: There was a decrease in resistance to nalidixic acid and ciprofloxacin in Salmonella, and a decrease in resistance to ciprofloxacin in Campylobacter since 2018. Most antimicrobials were used for the prevention of enteric diseases. The diagnoses of septicemia and enteric disease decreased, while yolk sac infection and miscellaneous bacterial diseases (mixed causes) increased, and diagnoses of respiratory disease remained stable.