Managing Johne’s Disease and Pestivirus
- kateleighanderson
- Aug 1
- 2 min read
Protecting Sheep and Cattle Fertility in Central West NSW
The Hidden Threats to Fertility in Dubbo’s Sheep and Cattle
For sheep and cattle producers across Dubbo and the Central West of NSW, maintaining herd and flock fertility is critical to profitability. Among the many health challenges faced, Johne’s disease and Pestivirus stand out as silent but costly threats that can severely impact reproductive performance if left unmanaged.
Understanding these diseases, their impact, and how veterinary-led management programs can protect your livestock is essential for sustainable production.
What is Johne’s Disease?
Johne’s disease (paratuberculosis) is a chronic bacterial infection caused by Mycobacterium avium subspecies paratuberculosis (MAP). It primarily affects the intestines of sheep and cattle, leading to progressive weight loss, diarrhoea, and reduced productivity.
Why it matters for fertility:
Infected animals often suffer poor body condition, leading to decreased conception rates.
Johne’s disease can cause increased abortion rates and weak offspring.
It is contagious and spreads through faecal contamination, making control challenging.
What is Pestivirus?
Pestivirus refers to a group of viruses including Bovine Viral Diarrhoea Virus (BVDV) in
cattle and Border Disease Virus (BDV) in sheep. These viruses can cause reproductive losses such as:
Abortions and stillbirths
Birth defects and weak lambs/calves
Infertility and reduced conception rates
Why it matters: Pestivirus infections can spread rapidly through herds and flocks, especially where biosecurity and vaccination programs are not in place.
How Veterinary Management Helps Control These Diseases
Veterinarians in Dubbo and the Central West are vital partners in protecting your herd or flock from Johne’s disease and Pestivirus. Key services include:
Disease Testing and Surveillance: Accurate diagnostics to identify infected animals early.
Vaccination Programs: Tailored vaccination schedules to reduce disease incidence and improve immunity.
Biosecurity Planning: Advice on quarantine, animal movement, and hygiene to limit disease spread.
Herd Health Monitoring: Regular check-ups and fertility assessments to catch issues early.
Culling Strategies: Removing infected animals to protect the wider herd or flock.
Why Regular Veterinary Involvement is Crucial
These diseases are complex and can remain hidden for long periods. Only veterinary
expertise can provide:
Reliable disease diagnosis with advanced lab testing
Risk-based herd or flock health planning
Ongoing monitoring to track disease status and treatment efficacy
Frequently Asked Questions
Can Johne’s disease be cured?
No effective cure exists, but management and control programs can limit its spread and impact.
Are Pestivirus vaccinations safe for pregnant animals?
Yes, but vaccination timing is critical — vets will advise the best schedule.
How often should I test my herd or flock?
Annual testing is recommended in at-risk herds or flocks, or as advised by your vet.
Protect Your Livestock Fertility with Central West Genetics
For producers in Dubbo and Central West NSW, managing Johne’s disease and Pestivirus is essential to protect fertility and productivity. Veterinary-led disease control programs provide peace of mind and long-term benefits.
At Central West Genetics, our vets offer comprehensive testing, vaccination, and health
management tailored to your sheep and cattle enterprises.
Contact us today to discuss how we can help safeguard your herd or flock from these
costly diseases.
