08/03/2025
"Pasteurella free" sounds ideal but what does it really mean?
Some breeders believe they can cull their way to a clean herd. This is largely due to studies based off a method developed by Dr. John Webster. But here is something to consider, the Webster method was developed for lab colonies, using sedation for regular deep nasal swabs, barrier housing, and strict biosecurity to maintain sterility. It's not just about culling, it's about controlling every variable, from airflow to microbial exposure. But breeders don't live in sterile labs. We work in real world environments, with real world genetics.
True resistance comes from selective breeding and environmental management. Because immunity isn't the absence of bacteria, it's the ability to thrive despite.
