FASH11: Respiratory Disease of Growing Lambs Flashcards

1
Q

What are the agents that cause pasteurellosis?

A

Mannheimia haemolytica

Bibersteinia trehalosi

Pasteurella multocida

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What three conditions is M. haemolytica related to?

A

Septicaemia in young lambs

Pneumonia in growing lambs

Mastitis in ewes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Describe the pathology of pneumonic pasteurellosis.

A

Ecchymotic haemorrhages over the throat and over the ribs

Lungs are swollen and purple-red and the airways contain pink stained froth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Describe the pathology of septicaemic pasteurellosis.

A

Pleurisy and pericarditis, with petechiae in the myocardium, spleen, liver, and kidney, enlarged lymph nodes and hepatic fatty change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Describe the epidemiology of M. haemolytica.

A

Occurs sporadically or as a flock outbreak. Ewes and lambs may be affects

Sudden death often seen first

Other animals then follow with pneumonia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How do you treat m. haemolytica?

A

Oxytetracycline or tilmicosin

NSAIDs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Is treatment of M. haemolytica the best option?

A

Not necessarily

A decision must be made whether to gather and treat the lambs during an outbreak since handling for treatment may trigger further deaths/disease, and most acute mortality often occurs in the first day or two of the outbreak

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Best way to prevent infection by m. haemolytica?

A

Vaccination with modern iron regulation protein

Booster before lambing for passive immunity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What diseases are caused by pasteurella trehalosi?

A

Systemic pasteurellosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the most common diagnosed cause of sudden death in lambs between july and december?

A

systemic pasteurellosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are outbreaks of systemic pasteurellosis followed from?

A

Movement of lambs onto rape, turnips, or improved pastures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How does p. trehalosi gain entry?

A

GI erosions and ulcers caused by dietary change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How do you treat systemic pasteurellosis?

A

Oxytetracycline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How do you control systemic pasteurellosis?

A

Vacciantion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Infection with parainfluenza virus type 3 predisposes them to what?

A

M. haemolytica

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the agent of atypical pneumonia?

A

Mycoplasma ovipneumoniae

17
Q

How do you treat atypical pneumonia?

A

Oxytetracycline

18
Q

How do you control against atypical pneumonia?

A
  • Improve ventilation
  • reduce stocking densities
  • avoid shared airspace with older sheep
  • isolation of purchased lambs
  • vaccination against pasteurellosis
19
Q

What animals are more susceptible to developing laryngeal chondritis?

A

Texel and Suffolk

Short neck confirmation with trauma/ dust/infection

20
Q

How do you treat laryngeal chondritis?

A

Steroid IV or antibiotic (penicillin)

21
Q

What develops following pneumonic pasteurellosis or atypical pneumonia?

A

Chronic suppurative pneumonia

22
Q

How does chronic suppurative pneumonia develop?

A

Occurs when pockets of bacterial infection persist and are walled off as chronic abscesses in the lung tissue or pleural space.

It may also be caused by bacteraemia spread from a septic focus.

23
Q

How do you treat chronic suppurative pneumonia?

A

penicillin