A well-timed vaccination plan with Salvexin+B reduces the risk and consequences of a Salmonella disease outbreak. Vaccination is best timed ahead of the greatest risk period for your farm or region. The recommended vaccination timing differs for the two forms of disease, Enteric (Gut) and Brandenburg (Abortion) Salmonellosis.
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 2-3 weeks prior to the anticipated risk period. A full preventative programme is recommended.
Subsequent years: an annual booster, given 2-3 weeks prior to the anticipated risk period.
Pack size: 125 or 250 dose packs.
It is NOT recommended to delay vaccination until the first signs of disease. This will severely compromise protection.
AVAILABLE ONLY UNDER VETERINARY AUTHORISATION
ACVM Registration No: A7886 ®Registered Trademark. Schering-Plough Animal Health Ltd.
Phone: 0800 800 543. www.msd-animal-health.co.nz NZ/SPV/1017/0003
Risk Factors for Salmonellosis
Good management practices combined with well-timed vaccination will greatly reduce the risk of disease though it will never be completely eliminated. A preventative vaccination programme with Salvexin®+B is best when tailored to your farms requirements with the help of your vet.
- Usually strikes without warning and spreads quickly. It is difficult to predict when the disease will strike as Salmonella bacteria is present on most farms, just waiting for the right conditions to cause disease. The first sign is usually the death of adult sheep.
- Brandenburg disease is characterised by abortions and ewe deaths in late pregnancy, and this can cause crippling losses on farms in southern New Zealand.
- Enteric (or gut) Salmonellosis is more common and can lead to significant capital losses in any, but especially, drier regions of the country. It usually occurs
from early summer through to winter, however it has been reported in spring as well.
Important information about Salmonella
Various factors can trigger a Salmonella outbreak, including mustering, yarding, trucking, weather extremes, or a sudden change in nutrition.
Enteric Salmonellosis usually affects sheep from December through to July. There are many strains of Salmonella in the environment. In sheep, the main cause is Salmonella hindmarsh, and to a lesser extent S. typhimurium.
There is no way salmonella can be eliminated - it is endemic in livestock populations, and the number of outbreaks will fluctuate from season to season. The initial source of infection comes from carrier animals that show no sign of disease. Newly infected animals can spread huge numbers of bacteria and rapidly contaminate the environment.
In sheep, mortality can be up to 15 percent in a severe Enteric outbreak, but 3-5 percent is more usual. Symptoms include profuse, watery, smelly diarrhoea which often contains blood, then septicemia and death. Dead animals are often found near water. Survivors can become carriers and spread the disease. If you have any suspicion of disease you need to contact your vet immediately.
In Southern areas of New Zealand, Salmonella Brandenburg can be a major issue, leading to abortions and the loss of ewes. Vaccination programmes for Brandenburg need to be adjusted to ensure the best protection is in place for your farm.
Sheep can be protected through an annual vaccination programme with Salvexin+B. If making the investment in vaccinating your flock or herd, it is essential that this is done properly. Talk to your vet about a vaccination programme that that suits your farm.
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