Bovine Respiratory Disease (Exam 1)

Question 1

The most accurate term for Bovine Respiratory Disease is:

Answer 1

Bovine Infectious Bronchopneumonia

Question 2

What is the most classic lesion associated with Bovine Respiratory Disease?

Answer 2

cranioventral lung consolidation

Question 3

List the 4 major categories of factors/stressors which can lead to Bovine Respiratory Disease.

Answer 3

1. weaning
2. processing
3. movement
4. immunity

Question 4

(T/F) It is more beneficial for cattle to spread out processing procedures such as castration and vaccination rather than doing them all at once.

Answer 4

True

Question 5

Bovine Respiratory Disease is caused by a (viral/bacterial) infection which causes initial immunosuppression, which later turns into a (viral/bacterial) infection.

Answer 5

viral –> bacterial

Question 6

List the 4 viral agents which predispose cattle to Bovine Respiratory Disease.

Answer 6

1. BVDV
2. PI3
3. BHV-1
4. BRSV

Question 7

List the 4 species of bacteria which cause Bovine Respiratory Disease.

Answer 7

1. Mannheimia haemolytica
2. Pasteurella multocida
3. Histophilus somni
4. Mycoplasma bovis

Question 8

Which species of bacteria is the most common isolate of feedlot cattle with Bovine Respiratory Disease?

Answer 8

M. haemolytica

Question 9

________ is the major virulence factor of M. haemolytica.

Answer 9

leukotoxin

Question 10

Which species of bacteria is prominent in dairy calf pneumonia –> Bovine Respiratory Disease?

Answer 10

P. multocida

Question 11

Which species of bacteria causes vasculitis and vascular thrombi in addition to Bovine Respiratory Disease?

Answer 11

Histophilus somni

Question 12

Which species of bacteria is most common in dairy calves, associated with feeding and milk?

Answer 12

Mycoplasma bovis

Question 13

Out of the 4 bacterial agents causing Bovine Respiratory Disease, which is NOT a gram-negative bacterium, and therefore DOES NOT cause endotoxemia?

Answer 13

Mycoplasma bovis

Question 14

What is the normal RR for an adult bovine?

Answer 14

12-26 bpm

Question 15

Increased inspiratory efforts indicate (lower/upper) airway disease. Increased expiratory efforts indicate (lower/upper) airway disease.

Answer 15

upper
lower

Question 16

(T/F) Both upper and lower respiratory diseases can show clinical signs such as cough and nasal discharge.

Answer 16

True

Question 17

What is the main sign on thoracic ultrasound to diagnose Bovine Respiratory Disease?

Answer 17

lung consolidation (pleural line interrupted)

Question 18

It is best to culture a sample from an animal in the (early/late) stage of disease, (treated/untreated) with antibiotics, and (no/mild/severe) clinical signs.

Answer 18

early
untreated
mild

Question 19

__________ bacteria respond poorly to antimicrobials, specifically ________.

Answer 19

Mycoplasma
beta-lactams

Question 20

Core cattle vaccinations are recommended (before/after) weaning.

Answer 20

before

Question 21

(Modified-Live/Killed) vaccines offer a better immune response.

Answer 21

Modified-Live

Question 22

(T/F) Using killed vaccines, there is concern with unvaccinated pregnant cows.

Answer 22

False - modified-live