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Randomized clinical trial to evaluate the pathogenicity of Bibersteinia trehalosi in respiratory disease among calves
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Randomized clinical trial to evaluate the pathogenicity of Bibersteinia trehalosi in respiratory disease among calves
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Journal Article
Randomized clinical trial to evaluate the pathogenicity of Bibersteinia trehalosi in respiratory disease among calves
2014
Overview
Background
Bibersteinia trehalosi
causes respiratory disease in ruminants particularly in wild and domestic sheep. Recently, there has been an increased number of
B. trehalosi
isolates obtained from diagnostic samples from bovine respiratory disease cases. This study evaluated the role of
B. trehalosi
in bovine respiratory disease using an intra-tracheal inoculation model in calves. Thirty six cross bred 2–3 month old dairy calves were inoculated intra-tracheally with either leukotoxin negative
B. trehalosi
, leukotoxin positive
B. trehalosi
isolate,
Mannheimia haemolytica
, a combination of leukotoxin negative
B. trehalosi
and
M. haemolytica
or negative control. Calves were euthanized and necropsy performed on day 10 of study.
Results
B. trehalosi
inoculated calves did not have increased lung involvement compared to control calves. Additionally,
B. trehalosi
was only cultured once from the lungs of inoculated calves at necropsy.
Conclusions
Based on these findings
B. trehalosi
may not be a primary pathogen of respiratory disease in cattle. Culture of
B. trehalosi
from diagnostic submissions should not be immediately identified as a primary cause of respiratory disease.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V
Subject
/ Bacteria
/ Cattle
/ Cattle Diseases - microbiology
/ Lungs
/ Medicine
/ necropsy
/ Pasteurellaceae - classification
/ Pasteurellaceae - pathogenicity
/ Pasteurellaceae Infections - microbiology
/ Pasteurellaceae Infections - veterinary
/ sheep
/ Studies
/ Veterinary Medicine/Veterinary Science
/ Zoology
