Abstract
A retrospective study was performed to compare the treatment regimens in feedlot cattle that died with bovine respiratory disease (BRD) to the antimicrobial susceptibility patterns of the microorganisms isolated from lungs. Forty-three cattle submitted by the Willard Sparks Beef Research Center (WSBRC) to the Oklahoma Animal Disease Diagnostic Laboratory for postmortem examination during 2007 had bronchopneumonia (acute = 16, subacute = 5, or chronic = 22). Lungs from cattle were cultured aerobically (40 cattle) and for Mycoplasma spp. (34 cattle). Susceptibility panels were performed. At least 1 BRD pathogen (Mannheimia haemolytica, Pasteurella multocida, Histophilus somni, Mycoplasma bovis, or Arcanobacterium pyogenes) was isolated from 39 cattle, and 77% (30/39) had multiple organisms recovered. Mycoplasmal infections were common (25/34) and a major component of mixed infections (24/25). The majority (60%) of the M. haemolytica, P. multocida, and H. somni isolates were resistant to tetracycline. Most of the H. somni isolates (67%) were susceptible to tilmicosin (Ti), enrofloxacin (En), ceftiofur (Ce), and florfenicol, despite extensive treatment with Ti, En, and Ce (75% of isolates were from cattle that received each antimic...Continue Reading
References
Nov 22, 1997·The Veterinary Clinics of North America. Food Animal Practice·D Griffin
Nov 22, 1997·The Veterinary Clinics of North America. Food Animal Practice·D A Mosier
Nov 22, 1997·The Veterinary Clinics of North America. Food Animal Practice·M Apley
May 26, 1999·Journal of Animal Science·M L GalyeanG C Duff
Nov 12, 2003·The Veterinary Clinics of North America. Food Animal Practice·Michael D Apley
Apr 17, 2004·Australian Veterinary Journal·P M V CusackI J Lean
Oct 6, 2004·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Ronald D WelshAnthony W Confer
Mar 29, 2006·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Mihai I GageaJeff L Caswell
Jul 4, 2006·The Veterinary Clinics of North America. Food Animal Practice·Mike Apley
Nov 7, 2006·Journal of Animal Science·G C Duff, M L Galyean
Jan 26, 2008·Animal Health Research Reviews·S M DaboA W Confer
Nov 6, 2008·Animal Health Research Reviews·Douglas R CallAshish A Sawant
Jul 1, 2009·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Robert W FultonAmy Reck
Dec 17, 2009·Animal Health Research Reviews·Anthony W Confer
Citations
Oct 17, 2012·BMC Bioinformatics·Joseph S ReddyBindu Nanduri
Mar 31, 2015·Journal of Veterinary Internal Medicine·N R NoyesP S Morley
Oct 30, 2012·The Veterinary Clinics of North America. Food Animal Practice·Jeff L CaswellKen Bateman
Sep 17, 2015·Animal Health Research Reviews·K D DeDonder, M D Apley
Mar 31, 2016·American Journal of Veterinary Research·Anthony W ConferNicholas J Sorensen
Jan 15, 2015·The Veterinary Journal·Brian V Lubbers, John Turnidge
Jan 21, 2015·Research in Veterinary Science·J D TaylorA W Confer
Nov 21, 2014·Animal Health Research Reviews·Gordon W Brumbaugh
Aug 24, 2012·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Ellen PortisGillian Stoltman
Apr 11, 2013·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Brian V Lubbers, Gregg A Hanzlicek
Jan 31, 2014·Journal of Clinical Microbiology·Cassidy L KlimaTim A McAllister
Dec 22, 2016·Journal of Animal Science and Biotechnology·Andrew Cameron, Tim A McAllister
Nov 30, 2016·BMC Genomics·Michael L ClawsonTimothy P L Smith
Nov 3, 2020·Veterinary World·Swati SahayRajeswari Shome
Mar 3, 2019·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Fan YangRonald E Baynes