Blackleg Vaccine
Active substance
ATC code
Species
Cattle and sheep
Indications
For the active immunisation of sheep and cattle against disease associated with infections caused by Clostridium chauvoei (Blackleg and post-parturient gangrene). Onset and duration of immunity have not been determined for this vaccine.
Dose to be administered and administration route
Dose:
Primary vaccination:
Cattle: two doses of 2 ml administered six weeks apart, 2-3 weeks before the expected period of risk.
Sheep: two doses of 1 ml administered six weeks apart, 2-3 weeks before the expected period of risk
Revaccination:
Revaccination with a single dose is advised annually before the expected period of risk
Administration:
By subcutaneous injection preferably in the loose skin on the side of the neck, observing aseptic precautions. Shake bottle thoroughly before use.
Syringes and needles should be sterilised before use and the injection should be made through an area of clean, dry skin, taking aseptic precautions against contamination.
Adverse reactions
Occasional hypersensitivity reactions may occur. In such cases an appropriate dose of adrenalin and/or antihistamines should be administered without delay.
Most vaccinated animals may experience reactions to vaccination. These reactions are usually localised swelling or induration at the injection site but may also include abscess or other reaction in the underlying tissues at the injection site.
Swelling at the injection site occurs in the majority of animals and may reach 14 cm diameter. Most local reactions resolve in less then 10 weeks. In up to 17% of animals an abscess may develop. Vaccination may give rise to reactions in the underlying tissues at the injection site.
Skin discolouration (which returns to normal as the local reaction resolved) and localised pain for 1-2 days post first vaccination may occur at the injection site. The local reactions do not affect the general health, demeanour, feeding or weight gain of the animals.
