session 3 Flashcards

1
Q

which bacterial causes of bovine pneumonia are gram positive?

A

Trueperella pyogenes

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2
Q

What are 5 common bacterial organisms that cause pneumonia in cattle?

A
Mannheimia haemolytica
Histophilus somni
Pasteurella multocida
Trueperella pyogenes
Mycoplasma spp
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3
Q

Which bacterial causes of bovine pneumonia can be primary or secondary?

A

Mycoplasma
Histophilus somni
Mannheimia haemolytica

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4
Q

What are 4 common viral diseases of cattle that affect the respiratory system?

A

IBR (herpes)
Bovine Resp Syncytial Virus
BVD
Parainfluenza

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5
Q

Which bacterial pathogens cause nodular abscesses found in the lungs on necropsy?

A

Trueperella pyogenes

Mycoplasma

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6
Q

Which vaccines are considered core vaccines by American Association of Bovine Practitioners?​

A
IBR
BVD
PI3
BRSV
Clostridials
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7
Q

Which pathogen in a MLV respiratory vaccine can cause abortion in pregnant cows?​

A

Bovine Herpes Virus (IBR)

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8
Q

Which diagnostic test will likely have too many contaminants? The fewest?​

A

Most contaminants would occur with a nasal swab samples.

Least contaminants would occur with a Bronchial alveolar lavage samples.

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9
Q

Which diagnostic test would be likely to collect a sample which represent both lung lobes?​

A

transtracheal wash

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10
Q

What type of sample from the respiratory system would you need to order an Immunohistochemistry test? ​

A

Postmortem lung or trachea tissue sample.

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11
Q

Are there any approved anti-viral drugs for food animal use in the US?

A

NO - banned by FDA

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12
Q

What is the approved NSAID for reducing fever in BRD?

A

Flunixin

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13
Q

What would be the disadvantages to giving a corticosteroid to a cow with BRD? ​

A

Abortion if pregnant

Decrease macrophage ability to fight off infection

Reactivation of BHV-1

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14
Q

Are B-lactams and cephalosporins effective against Mycoplasma sp.? ​

A

NO CELL WALL

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15
Q

What is the best treatment for Pneumonia? ​

A

prevention

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16
Q

Which bacterial pneumonia pathogen causes high grade fever?

A

Mannheimia haemolytica

17
Q

What are contraindicated use of Dexmethasone as an anti-inflammatory in cattle?

A

pregnancy (abortion)

latent infection of IBR

18
Q

What pneumonia pathogen can cause an outbreak in a well managed facility without a stress factor?

A

BRSV

19
Q

Histophilus somni

A

Anaerobic, gram neg

20
Q

Mannheimia haemolytica

A

Aerobic gram neg

21
Q

Pasteurella multicida

A

Aerobic gram neg

22
Q

Trueperella pyogenes

A

Anaerobic gram pos

T for +

23
Q

What are common things seen in herds with viral infections.

A
  • high morbidity, low mortality
  • High grade fevers
  • Lead to secondary bacterial infections due to affects on mucociliary apparatus, immunosuppression