Isolation and antimicrobial susceptibilities of bacterial pathogens from bovine pneumonia: 1994--2002

Oklahoma Animal Disease Diagnostic Laboratory, Oklahoma State University, Stillwater, OK 74078, USA. Between 1994 and 2002, a total of 390 (46.3%) Mannheimia haemolytica, 292 (34.7%) Pasteurella multocida, and 160 (19.0%) Histophilus somni were isolated at the Oklahoma Animal Disease Diagnostic Laboratory from lungs from 6-18-month-old beef cattle with pneumonia. The ratio of M. haemolytica isolations to P. multocida isolations decreased from 3.1 in 1994 to 0.8 in 2000 while increasing to 1.5 in 2002. Mannheimia haemolytica isolations significantly (P HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS Copyright © 2004 by the American Association of Veterinary Laboratory Diagnosticians, Inc.