Clostridial Diseases in Sheep

Clostridial Diseases in Sheep – Why vaccinate?

– Producers can prevent economic losses from certain diseases by planning a vaccine program.

– Livestock are vaccinated to protect against some of the most common serious infectious diseases

– Vaccination stimulates the body’s defence system to build immunity to a particular disease by exposing them to the organisms in the form of a vaccine

– Initially, vaccinations require a booster following the first vaccination 4-6 weeks later, and then ideally an annual booster

– Most of the clostridial diseases result in sudden death if an animal is not immune to the disease, resulting in potentially huge economic losses

A little info on the 5 clostridial diseases that the 5in1 vaccine covers..

Enterotoxaemia (Pulpy Kidney) –

  • Often a disease of younger stock undergoing nutritional changes – sudden change to a low fibre, high carb diet, moved onto lush, rapidly growing pasture or cereal crops, or grain
  • Clinical Signs –
    • Sudden death following convulsions
  • NO treatment

Tetanus (Lock Jaw)

  • Bacteria is found in the soil and enters the animal through cuts/puncture wounds
  • Clinical signs
    • Muscle rigidity/spasms, increase response to stimuli, convulsions, death

Black Leg

  • Soil borne infection that is presumed to enter the animal through ingesting feed off the ground
  • Livestock involved; cattle 6mths – 2yo, sheep of all ages
  • Rapidly growing stock on a high plane of nutrition
  • Warm wet months
  • Clinical Signs
    • Lameness, swelling of upper limbs, muscle necrosis
    • High fatality rate

Malignant Oedema (Gas Gangrene)

  • Infection is usually soil borne with entry through deep puncture wounds/trauma
  • All ages of stock susceptible; particularly females that have just given birth
  • Clinical Signs –
    • Inflammation, swelling/oedema and pain

Black Disease

  • Bacteria resides in soil. Most common cause of infection through faecal contamination of pasture
  • Associated with liver fluke
  • Clinical signs –
    • Sudden death

The extra disease covered with a 6 in1 vaccine…

Cheesy Gland (Caseous Lymphadenitis)

  • Endemic, infectious, contagious disease
  • Higher incidence in adult stock
  • Bacteria invade through wounds, broken/abraded skin, contaminated materials in water or feed, or directly from draining abscesses
  • Clinical Signs –
    • Enlargement of one or more superficial lymph nodes
    • Abscesses that commonly rupture