FAC14: Respiratory Disease of Adult Cattle

Question 1

Why are adults less likely to get a respiratory disease than young stock?

Answer 1

They are more likely to possess adaptive immunity and less susceptible to stressors

Question 2

What a signs that there is disease in the larynx and pharynx?

Answer 2

stertor, hypersalivation, and tachypnoea

Question 3

What is the DDx of disease in nasal passages?

Answer 3

• Trauma
• Foreign bodies
• Infection (A. lignierisi, A. bovis, T. pyogenes)
• Neoplasia

Question 4

What is the DDx of disease in the larynx and pharynx?

Answer 4

• Trauma
  
  • Drenching injury
  • Foreign body
• Laryngeal chondritis (F. necrophorum)

Question 5

What is the most common cause of infectious bovine rhinotracheitis outbreaks in adults?

Answer 5

• Naive herds following introduction
• Endemically infected herds following stress

Question 6

Describe the progression of an infectious bovine rhinotracheitis outbreak in adults.

Answer 6

• Sporadic milk drops
• Individuals with tracheitis/broncho-pneumonia
• Widespread herd involvement
  
  • Fatalities
  • Reduced milk production

Question 7

How is infectious bovine rhinotracheitis spread?

Answer 7

nose-to-nose contact

Question 8

What are the causative agents of acute bacterial pneumonia?

Answer 8

Mannheimia haemolytica and/or pasteurella multocida

Question 9

How does chronic suppurative pulmonary disease develop?

Answer 9

• Develops following incomplete recovery from pneumonia
  
  • Often after calving or stress

Question 10

What is the causative agent of chronic suppurative pulmonary disease?

Answer 10

T. pyogenes

Question 11

What is the worm that causes lungworm/husk?

Answer 11

Dictyocaulus viviparous

Question 12

How do you test for lungworm?

Answer 12

Baermann (shit samosa)

Question 13

What are the main clinical signs of fog fever?

Answer 13

• 1-2 weeks after moving to lush aftermath
• Overgorging on alfalfa, rape, kale, and turnip tops
• NO COUGHING
• NORMAL RECTAL TEMP

Question 14

What causes Farmer’s Lung?

Answer 14

Housed cattle eating mouldy hat

Question 15

Will you hear a murmur with endocarditis in cattle?

Answer 15

No murmur in >70% of cases

Question 16

What is the best way to prevent an uppre respiratory tract in the nasal passages and sinuses of adult cattle?

Answer 16

Avoid de-horning adult cattle, if unavoidable, then feed from floor to reduce risk of forages entering sinuses and avoid performing during the fly season

Question 17

How do you tell the difference between IBR and atopic rhinitis?

Answer 17

Atopic rhinitis usually affects individuals or a small number of animals, is highly seasonal (most common at turnout) and signs are generally mild

Question 18

What actually causes the cough when there are lungworms?

Answer 18

The cough is the result of the immune response to the lungworm larvae as they migrate through the lungs before they are killed

Question 19

What is the mould that causes farmer’s lung?

Answer 19

Mouldy hay contains spores derived from Micropolyspora faeni and Thermocatinomyces vulgaris