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Vaccinating lambs with Ovivac and Heptavac P Plus

Heptavac P Plus

Protect your lambs with Ovivac and Heptivac P Plus

Vaccinating lambs using Heptavac-P Plus or Ovivac-P Plus can help sheep produces realise full value of this year’s crop.

With early 2014 lamb prices running ahead of 2013 levels, sheep producers are being urged to get maximum potential from this year’s crop by making sure newborns on the farm are vaccinated against pasteurellosis and the main clostridial diseases. Lambs can succumb to pasteurella and clostridial diseases within hours, often with no warning signs of a disease outbreak. Pneumonia continues to be a significant cause of death in unvaccinated lambs and it can have a variety of causes, but many outbreaks are caused by pasteurellosis.

Pasteurella bacteria, with Mannheimia haemolytica and Bibersteinia trehalosi being the most important types to cause disease in sheep.

Flock problems usually start with sudden deaths, often in young lambs. But occurrence can be sporadic in individual sheep. Clostridial diseases like pulpy kidney, braxy, blackleg and tetanus are also a key threat to unprotected lambs.

Unfortunately, the colostrum lambs receive from vaccinated ewes shortly after birth only gives them disease protection for a limited time. If ewes are on the Heptavac-P Plus system and have been boosted in the run up to lambing, then their lambs will gain some immunity from drinking their colostrum. But this so called passive immunity only lasts for so long. Lambs that receive a good intake of colostrum only have antibodies against pasteurella for up to four weeks and clostridia for up to 12 weeks.

This means that some early season lambs may already be unprotected and at real risk from these prevalent disease threats unless they are vaccinated themselves.

Lambs can be protected by vaccinating them with either Heptavac-P Plus or Ovivac-P Plus from three weeks of age. The primary course involves two 2ml vaccinations 4-6 weeks apart. The first dose is a primer, while the second produces effective immunity. Animals that are intended to be kept for breeding simply need a booster of Heptavac-P Plus within 12 months, given at the same time as the rest of the flock get their annual pre-lambing booster and an annual booster 4-6 weeks before lambing every year thereafter.

Heptivac P Plus and Ovivac P Plus are only available to purchase in store, where you’ll be able to find more information about these products, and other points raised. Please visit your local Mole Valley Farmers branch and speak to one of our qualified staff (SQPs).


Source Details

 Mole Valley Farmers Newsletter, issue 601

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