session 3 Flashcards
which bacterial causes of bovine pneumonia are gram positive?
Trueperella pyogenes
What are 5 common bacterial organisms that cause pneumonia in cattle?
Mannheimia haemolytica Histophilus somni Pasteurella multocida Trueperella pyogenes Mycoplasma spp
Which bacterial causes of bovine pneumonia can be primary or secondary?
Mycoplasma
Histophilus somni
Mannheimia haemolytica
What are 4 common viral diseases of cattle that affect the respiratory system?
IBR (herpes)
Bovine Resp Syncytial Virus
BVD
Parainfluenza
Which bacterial pathogens cause nodular abscesses found in the lungs on necropsy?
Trueperella pyogenes
Mycoplasma
Which vaccines are considered core vaccines by American Association of Bovine Practitioners?
IBR BVD PI3 BRSV Clostridials
Which pathogen in a MLV respiratory vaccine can cause abortion in pregnant cows?
Bovine Herpes Virus (IBR)
Which diagnostic test will likely have too many contaminants? The fewest?
Most contaminants would occur with a nasal swab samples.
Least contaminants would occur with a Bronchial alveolar lavage samples.
Which diagnostic test would be likely to collect a sample which represent both lung lobes?
transtracheal wash
What type of sample from the respiratory system would you need to order an Immunohistochemistry test?
Postmortem lung or trachea tissue sample.
Are there any approved anti-viral drugs for food animal use in the US?
NO - banned by FDA
What is the approved NSAID for reducing fever in BRD?
Flunixin
What would be the disadvantages to giving a corticosteroid to a cow with BRD?
Abortion if pregnant
Decrease macrophage ability to fight off infection
Reactivation of BHV-1
Are B-lactams and cephalosporins effective against Mycoplasma sp.?
NO CELL WALL
What is the best treatment for Pneumonia?
prevention
Which bacterial pneumonia pathogen causes high grade fever?
Mannheimia haemolytica
What are contraindicated use of Dexmethasone as an anti-inflammatory in cattle?
pregnancy (abortion)
latent infection of IBR
What pneumonia pathogen can cause an outbreak in a well managed facility without a stress factor?
BRSV
Histophilus somni
Anaerobic, gram neg
Mannheimia haemolytica
Aerobic gram neg
Pasteurella multicida
Aerobic gram neg
Trueperella pyogenes
Anaerobic gram pos
T for +
What are common things seen in herds with viral infections.
- high morbidity, low mortality
- High grade fevers
- Lead to secondary bacterial infections due to affects on mucociliary apparatus, immunosuppression
