Herd Health Deep Dive: BVD & Yoni's with Dr. Alli O'Meara

In this episode, we explore two critical but often misunderstood cattle diseases—Bovine Viral Diarrhea (BVD) and Johne's Disease (Yoni's)—with veterinarian Dr. Alli O'Meara. Whether you're a seasoned producer or new to livestock, understanding these illnesses is key to herd management, biosecurity, and herd longevity.

Main Topics Covered:

• What is BVD, how it spreads, symptoms, and the significance of PI (Persistent Infection) carriers
• Testing protocols: ear notch vs. blood tests, and how to interpret results
• Vaccination strategies, including different vaccine types, timing, and efficacy
• The mechanisms of Johne's Disease transmission and why young calves are most vulnerable
• Testing and control measures for Johne's, including cull strategies and biosecurity
• The importance of herd hygiene, quarantine practices, and education to prevent disease spread
• The role of misinformation and the value of consulting with qualified large animal vets

Timestamps:

00:00 - Introduction to herd health topics with Dr. Alli O’Meara

02:15 - Dr. Alli’s background and her farm life balancing family and veterinary practice

04:45 - Deep dive into BVD: what it is, symptoms, and the importance of PI animals

07:50 - How BVD infects in utero and results in PI calves that shed virus for life

10:20 - Transmission routes of BVD — bodily secretions, semen, and environment

12:00 - Recognizing clinical signs of BVD and the importance of herd testing

14:30 - Vaccination discussion: types, timing, and protocol considerations

16:45 - When and how often to test for BVD — best practices for herd management

20:00 - Quarantine procedures after introducing new cattle to prevent BVD spread

22:30 - Recognizing and testing for Johne’s Disease (Yoni’s): signs, testing methods, and control

25:30 - How Johne’s transmits predominantly through manure and environmental exposure

28:15 - The long incubation period of Johne’s and when to test for early detection

31:00 - Biosecurity tips, herd hygiene, and managing infected animals

34:00 - Differences between infectious diseases in dairy versus beef herds

36:00 - The importance of veterinarian relationships and accurate testing in disease control

40:00 - Final thoughts on proactive herd management, education, and next steps

Resources & Links:

• BVD Information & Testing Options
• Johne’s Disease Control Programs
• Vaccine Types: MLV vs. Killed

Remember: Regular herd testing, proper biosecurity, and consulting with your veterinarian are essential steps to safeguard your herd from these costly diseases. Don't hesitate to ask your vet questions—knowledge is your best tool in herd health management.

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