WITH heavy rain experienced in many production regions recently, South Australian cattle farmers are being encouraged to keep a close eye out for three-day sickness.
Three-day sickness, or bovine ephemeral fever, is a viral disease of cattle that is spread by mosquitoes and biting midges.
The disease is more likely to occur in young stock, wetter northern regions, with it being more sporadic in southern cooler regions, and following big wet seasons, especially following several dry years.
According to Meat & Livestock Australia (MLA) diagnosis of three-day sickness will require assistance from a veterinarian.
Clinical signs of three-day sickness in livestock include:
- depression
- lameness and muscle stiffness
- shivering and twitching
- droopy ears
- drooling saliva, watery eyes, and runny nose
- recumbency
- reduced water and food intake
Bulls, heavily pregnant or high-producing cows and well-conditioned stock require special treatment.
MLA said that “veterinarians may recommend ensuring the affected animal has adequate shelter, water and food to minimise the impacts of heat on the animal”.
Rolling over handled stock several times a day, increasing circulation and use of anti-inflammatory drugs and calcium injections may also be recommended.
Prevention of the disease relies largely on vaccinating the herd.
Cattle can be vaccinated from six months of age and should be revaccinated at the start of summer each year to ensure continued protection.
When vaccinating, follow the directions on the vaccine label, document and file all animal treatment details to meet your Livestock Production Assurance (LPA) requirements, if LPA accredited.
