District vets are seeing cases of infertility in sheep across western NSW

Local Land Services District Vets are seeing cases of infertility in sheep across the NSW Western region with producers reporting a reduction in pregnancy scanning rates, however ewes scanned in lamb are still returning good multiple birth rates.

The most common diseases and causes of fertility issues in sheep are Ovine Brucellosis, Campylobacteriosis, Toxoplasmosis, Pestivirus, malnutrition, systemic diseases and toxicities, just to name a few.

For the cases our District Vets are seeing now, most flocks affected were joined in January to February.

Ovine brucellosis does not appear to be an issue and in general the ewes have been in good body condition score.

To start each of our investigation, a thorough history is required.

Details such as livestock origin, age, nutrition, joining dates and period, number/age/origin of rams used, previous scanning or lambing rates and knowledge of previous disease are extremely useful and might already tell us half the story.

After the initial conversation, our District Vets then plan a visit to the property to assess the livestock and environment.

If possible, we would perform a clinical exam on all affected animals (or a representative number) and some unaffected animals as well.

To achieve a diagnosis, sample collection for submission to the laboratory is required in most cases. Different blood samples and preputial or vaginal swab collection is most common.

If you are concerned about your flock’s fertility, please contact your local District Vet.