Microbial Resistance in Food Animals

% of Micro-organisms Resistant to Selected Antibiotics in Food Animals
from July-Dec 2006 and Jan-June 2007. (in Companion Animals )
Data provided by the Bacteriology lab, ADDL, Purdue University

	Beef								Dairy										Swine
Antibiotic	E. coli		Man. haemolitica		Past. multocida		Salmonella sp.		E. coli		Man. haemolitica		Past. multocida		Staph. aureus		Salmonella sp.		Haemophilus sp.		E. coli		Salmonella sp.		Strep. suis
	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec	Jan- June	July- Dec
Ampicillin	18	44	33	0	25	0	nt	100	60	59	33	50	0	20	66	66	64	29	16	2	65	56	67	60	15	6
Ceftiofur	0	15	0	0	25	17	nt	100	34	43	0	0	0	0	9	0	50	29	0	2	28	22	46	40	6	4
Chlortetracycline	27	65	0	0	0	17	nt	100	82	79	0	0	0	0	nt	nt	64	29	2	5	96	76	83	73	80	86
Clindamycin	100	100	100	100	100	100	nt	100	100	100	100	0	100	100	nt	nt	100	100	25	38	100	100	100	100	92	88
Enrofloxacin	0	8	0	0	0	17	nt	100	20	14	0	0	0	0	nt	nt	0	0	0	20	0	0	3	0	1	5
Erythromycin	100	100	33	0	100	50	nt	100	100	100	33	0	67	0	0	8	100	100	0	17	100	100	100	100	90	86
Florphenicol	27	47	0	50	50	17	nt	100	80	62	0	0	33	0	nt	nt	80	29	20	4	74	47	81	40	31	2
Gentamicin	0	12	0	0	25	33	nt	100	54	36	0	75	0	0	nt	nt	4	7	0	4	14	12	17	0	9	7
Neomycin	0	18	67	50	75	17	nt	100	73	61	33	75	100	60	nt	nt	56	7	0	0	54	38	22	7	37	25
Oxytetracycline	45	71	67	50	75	33	nt	100	85	86	33	25	100	60	nt	nt	68	29	14	21	97	77	89	73	91	95
Penicillin	100	100	33	0	100	100	nt	100	100	100	33	50	100	100	100	100	100	100	34	100	100	100	100	100	26	18
Spectinomycin	36	35	100	0	50	50	nt	100	82	69	100	100	100	40	nt	nt	100	64	50	23	74	61	97	100	36	24
Sulphachloropyridazine	9	45	0	0	0	0	nt	100	80	83	0	0	33	nr	nt	47	71	0	27	0	80	45	82	33	56	59
Sulphadimethoxine	9	60	33	50	50	50	nt	100	71	63	0	25	67	4	85	50	84	93	42	18	83	69	89	93	59	69
Sulphathiazole	9	50	0	0	50	50	nt	100	84	83	0	0	67	nr	nt	nt	80	0	16	17	82	51	86	67	68	68
Tiamulin	63	90	33	0	50	0	nt	100	95	97	0	0	0	0	nt	nt	100	100	59	0	97	99	100	100	26	14
Tilmicosin	100	100	33	50	100	50	nt	100	100	100	33	0	67	20	nt	nt	100	100	33	7	100	100	100	100	90	89
Triple Sulfa	0	22	0	0	0	0	nt	100	67	51	0	0	0	0	nt	nt	28	14	3	4	28	20	21	13	3	5
Tylosin	100	100	100	100	100	75	nt	100	100	100	100	100	100	100	nt	nt	100	100	2	67	100	100	100	100	92	91
number of isolates	11	52	3	2	4	6	0	1	76	87	3	4	3	10	13	12	25	14	64	56	129	131	36	15	140	84
nt - not tested