Clostridial disease Flashcards
1
Q
What bacteria causes blackleg?
A
- Clostridia chauvoei (true blackleg)
- Cl. septum & Cl. novyi (false blackleg)
Often see all 3 in combination
2
Q
Which ages are at most risk of blackleg?
A
- cattle between 6m-2y
3
Q
Can blackleg occur in sheep?
A
- yes sometimes
4
Q
What is blackleg a disease of?
A
- it’s a gangrenous dz of muscle
5
Q
Blackleg CS
A
- sudden onset of lameness
- pyrexia
- depression
- swollen limb which is initially warm then becomes cold
- death occurs in 12-36h
- animals often found dead
6
Q
Blackleg diagnosis
A
- PM to confirm
- affected tissue has characteristic dark purple colour and rancid odou
- oedema, gas or emphysema can also be present
7
Q
What causes pulpy kidney?
A
- Clostridia perfringens type D
8
Q
Who gets pulpy kidney?
A
- bacterium is a commensal of the GIT
- it proliferates in animals up to 2y/o
- mainly affects lambs
- calves, sheep & goats can also be affected
9
Q
Pulpy kidney risk factors
A
- overeating
- starchy diets
- dietary change
10
Q
Pulpy kidney CS
A
- sudden death
- neurological signs
- depression
11
Q
What causes braxy?
A
- C. septicum
12
Q
Braxy aetiology
A
- bacteria normally found in gut & soil
- can proliferate in animals fed autumn forage crops or roots that have been frosted
- dz suspected to be due to frost damage to the lining of the abomasum, allowing the organism to grow and produce toxin
13
Q
Braxy CS
A
- sudden death
- severe depression
