A sensitiser and booster vaccination of Campyvax4 to all replacement breeding ewes is recommended, followed by an annual booster every year. The sensitiser and booster vaccinations should be given to fit normal farming practice; ideally they should both be given prior to mating, or the sensitiser before and the booster after mating. For farms buying in ewes of unknown vaccination history, or those farms beginning a vaccination programme, a full 2-shot plan is recommended.
Administered by subcutaneous injection to ewes in the anterior (front) half of the neck.
1st year: a sensitising dose, followed by a booster dose 4-8 weeks later, completed prior to mating.
Subsequent years: an annual booster prior to mating.
New stock introduced to the breeding flock: a sensitising dose, followed by a booster dose 4-8 weeks later, prior to introduction to the flock.
Pack size: 100 or 500 dose packs.
AVAILABLE ONLY UNDER VETERINARY AUTHORISATION
ACVM Registration No: A9535 ®Registered Trademark. Schering-Plough Animal Health Ltd.
Phone: 0800 800 543. www.msd-animal-health.co.nz NZ/SPV/1017/0003
Important information about Campylobacter
Campylobacter is responsible for large scale abortions, with losses of up to 30% reported. Such large scale abortion storms are extremely devastating.
Evidence suggests subclinical infections also play a role in reduced lamb survival. Numerous studies have shown an association between vaccination and increased lambing percentage. Even when no abortions have been seen, vaccination has been observed to increase lambing percentage by an average of 9%.
Most Campylobacter abortions in sheep are caused by the species Campylobacter fetus fetus. Testing indicates that around 88% of flocks, and 50% of individual ewes, have been exposed to C. fetus fetus during their lifetime. A second species, Campylobacter jejuni can also cause abortion. Abortions caused by C. jejuni can be significant, but are sporadic. Approximately 1 in 7 Campylobacter abortions are caused by C. jejuni.
Infections are spread to other ewes by direct contact with aborted fetuses, membranes or vaginal discharges. These discharges occur for up to 6 weeks following abortion. Sheep can also be indirectly infected by eating pasture or drinking water contaminated with bacteria. The bacteria can survive in soil, water, pasture and hay for up to three weeks - often longer in winter.
Campylobacter are present on most, if not all, farms. It is therefore likely to be present on your farm, even though it may not have been diagnosed or you have not seen abortions. Abortion storms are obvious. However, in many cases the signs are not so clear cut. Losses are often scattered, ongoing and not readily detected. Either way, the impact on your lamb productivity will be significant.
Greater than expected differences between scanning and tailing percentages can be an indication of Campylobacter infection, even if there is no obvious history of the disease on your farm.
Campyvax4 gives your ewes protection against all C. fetus fetus strains and is the only vaccine that includes C. jejuni. Vaccination with Campyvax4 will protect against Campylobacter abortion storms, and any unseen Campylobacter losses between scanning and tailing.
Risk Factors for Campylobacter
Vaccinating with Campyvax® improves lambing performance and prevention of Campylobacter abortions. In fact, field studies show that flocks that are vaccinated against Campylobacter have lambing percentages on average 9% higher than flocks that are not.
- Is present on 88% of New Zealand farms.
- Maiden Ewes hoggets or two tooths are most at risk but mixed age ewes who have not been previously exposed (up to 50%) are still at risk too.
- Is the most common infectious agent causing abortion on New Zealand farms, with 60% of sheep abortions diagnosed attributed to Campylobacter.
- Occurs when susceptible animals ingest contaminated feed or water, or by direct contact with infected fetuses or fetal membranes. Scavenging birds such as the Black Backed Gull may come vectors and spread the disease between paddocks and even farms.
- After infection, the organism is present in discharges for up to six weeks, with some ewes becoming longer-term carriers.
- Infection can persist on a number of years in carrier sheep without overt signs of disease.
- Signs are not just aborted lambs, there may be reduced scanning and lambing percentages too.