. 2019 May 3;6:131. doi: 10.3389/fvets.2019.00131

Table 3.

Antimicrobial use and resistance indicator summary, CIPARS broiler chicken and turkey flocks in British Columbia, 2013–2017.

	2013	2014	2015	2016	2017
PRIMARY AMU INDICATOR^a
mg/PCU_poultry, total AMU	94	78	56	107	128
mg/PCU_poultry, ceftiofur use	0.08	0.01	0.00	0.00	0.00
SECONDARY AMU INDICATOR^a
mg/PCU_poultry, gentamicin and lincomycin-spectinomycin use	0.04	0.06	0.28	0.03	0.07
PRIMARY AMR INDICATOR^a
AMR Ix_{SusceptibleE. coli}	0.29	0.24	0.24	0.26	0.19
SECONDARY AMR INDICATOR^b
AMR Ix_{CRO−RE. coli}	0.19	0.20	0.09	0.07	0.07
AMR Ix_{≥2Multiclass−RE. coli}	0.53	0.50	0.60	0.61	0.59
AMR Ix_{CIP−RCampylobacter}	0.23	0.40	0.35	0.42	0.41
AMR Ix_{GEN−RE. coli}	0.11	0.14	0.24	0.22	0.22

AMU, antimicrobial use; AMR, antimicrobial resistance; mg/PCU, milligrams/population correction unit; mg/PCU_poultry, the total mg/PCU in broiler chickens and turkeys combined; AMR Ix, antimicrobial resistance indicator index; CRO-R, ceftriaxone-resistant; CIP-R, ciprofloxacin-resistant; GEN-R, gentamicin-resistant; ≥2 Multiclass-R, sum of all isolates that exhibited resistance to 2 or more classes of antimicrobials;

^a,b

Please refer to the methods for the description of these indicators.