Classification

CLASSIFIACTION
  • The clostridia can be divided into four major groups according to the kind of disease they produce. They are as follows.
  • The Histotoxic clostridia causes a variety of tissue (often muscle) infections frequently following wounds or other trauma (eg).

C. chauvoei
Cattle, sheep (pigs)
Black quarter (Black leg)
C. septicum
Cattle
Sheep
Chicken
Malignant edema
B raxy
Necrotic dermatitis
C. novyi type A
Sheep
Cattle and Sheep
Big head of rams
Gas gangrene
Type B
Sheep (Cattle)
Black disease (necrotic hepatitis)
Type C
Water buffaloe
Osteomyelitis

  • Hepatotoxic clostridia produces their toxins in the liver, thus resulting in the disease Bacillary haemoglobinuria and Black disease (Eg.).
C. haemolyticum ( C. novyi type D)
Cattle, (sheep)
Bacilliary haemoglobinuria
C.sordellii
Cattle, Sheep, Horses
Gas gangrene
C. colinum
Birds
Quail disease,Ulcerative enteritis
C. piliforme
foals, laboratory animals
Calves, dogs and cats
foals, laboratory animals
Calves, dogs and cats
  • The Enterotoxigenic clostridium produces mainly enterotoxaemia and food poisoning although they are occasionally histotoxic (Eg).

C. perfringens ( C.welchii ) Type A
Humans
Lambs
Broiler chickens
Food poisoning, gas gangrene Enterotoxaemic Jaundice
(Yellow lambs disease) Necrotic enteritis
C. perfringens (C.welchii ) Type B
Lambs (Under 3 weeks old)
Lamb dysentery
C. perfringens ( C.welchii ) Type C
Piglets, lambs, calves and foals
Broiler chickens
Adult sheep and goat
Haemorrhagic enterotoxaemia(Clostridial enteritis)
Necrotic enteritis Struck
C. perfringens (C.welchii ) Type D
Sheep(except neonates)
Pulpy kidney disease
C. perfringens (C.welchii ) Type E
Calves and lambs
Enterotoxaemia

  • The Neurotoxic clostridia cause the disease by the production of the potent exotoxins (Neurotoxins) (eg.)
C. tetani
Tetanus
C. botulinum
Botulism

 
Last modified: Monday, 4 June 2012, 4:23 AM