Table 1.

Farm characteristics of CIPARS broiler chicken and turkey layer flocks sampled in British Columbia.

	2013	2014	2015	2016	2017	Total	Mean	Std. dev.
BROILER CHICKENS
Number of flocks sampled, n	26	30	25	32	30	143	29	3
Population (number of birds)	522,525	650,756	592,652	765,987	732,417	3,264,336	652,867	99,679
Biomass (using 1 kg ESVAC weight)	522,525	650,756	592,652	765,987	732,417	3,264,336	652,867	99,679
Days at risk (average)	33	33	33	33	34	N/A	33	0
Milligrams active ingredients	54,512,352	67,656,030	54,790,215	73,658,806	71,972,475	322,589,877	64,517,976	9,269,757
mg/PCU	104	104	92	96	98	99	99	5
TURKEYS
Number of flocks sampled, n	29	29	30	30	27	145	29	1
Population (number of birds)	253,930	270,750	267,228	303,641	246,046	1,341,594	268,319	22,124
Biomass (using 6.5 kg ESVAC weight)	1,650,542	1,759,872	1,736,982	1,973,663	1,599,299	8,720,358	1,744,072	143,805
Days at risk	87	84	88	88	89	N/A	87	2
Milligrams active ingredients	149,355,383	120,425,553	74,654,795	219,925,956	225,819,340	790,181,027	158,036,205	64,937,031
mg/PCU	90	68	43	111	141	91	91	38
BROILER CHICKENS AND TURKEYS
Population, total	776,455	921,506	859,880	1,069,627	978,463	4,605,930	921,186	111,827
Biomass (PCU), total	2,173,067	2,410,628	2,329,634	2,739,650	2,331,716	11,984,694	2,396,939	210,084
Milligrams active ingredients, total	203,867,735	188,081,583	129,445,009	293,584,762	297,791,815	1,112,770,904	222,554,181	72,306,477
mg/PCU, total	94	78	56	107	128	93	93	27

ESVAC, European Surveillance for Veterinary Antimicrobial Consumption; PCU, population correction unit.