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