Texas Panhandle Veterinary Diagnostic Laboratory

October through December 1998

Below are culture and sensitivity results from a Texas Panhandle Veterinary Diagnostic Laboratory for each of the primary bacterial pathogens associated with BRD. Data was collected October through December 1998.

 
Florfenicol
Ceftiofur
Tetracycline
Tilmicosin
 
S*
I
R
S
I
R
S
I
R
S
I
R
M. haem
72/72 (100)
 
 
72/72 (100)
 
 
45/72 (62.5)
9/72 (12.5)
18/72 (25.0)
54/72 (75.0)
4/72 (5.6)
14/72 (19.4)
P. mult
96/97 (98.97)†
 
1/97 (1.03)
97/97 (100)
 
 
45/97 (46.4)
11/97 (11.3)
41/97 (42.3)
65/97 (67.0)
13/97 (13.4)
19/97 (19.6)
H. somnus
20/20 (100)
 
 
20/20 (100)
 
 
19/20 (95.0)
 
1/20 (5.0)
7/20 (35.0)
5/20 (25.0)
8/20 (40.0)

*S: sensitive
I: intermediate
R: resistant

† Parenthetic values are percentages

Below, the data are represented graphically.

Mannheimia (Pasteurella) haemolytica isolates
Fall 1998

Haemophilus somnus isolates
Fall 1998

Pasteurella multocida isolates
Fall 1998