Miss M":38n5x8iz said:
That's basically it. Some people think that it is in the system of all rabbits, while others don't think so. We don't know. We do know that some rabbits are resistant to it. They can be exposed, and never develop symptoms.
Culling for pasteurella helps you develop a herd that is resistant, or possibly doesn't have it at all. It helps you maintain a herd that is healthy and relatively problem-free.
Some even cull for allergies. Any sign of health issues. It may seem a bit ruthless, but they are the ones who seem to now have robust, disease-free rabbitries.
I usually cull for allergies, but sometimes it is only one kind of hay our wood shavings, and if that is they case changing it will fix the problem. Of course, I raise a lot of rabbits and I have many to choose from for breeders. It is a different story for those getting started.
Most all rabbits carry some form of Pasturella, only two of the strains are deadly, or at least seriously harmful. Still, since most of us don't have a lab or vet on call, we try to error towards the safety of our whole herd. Even a regular Vet can't tell one which strain it is, only that the animal has it. So if one can't stop the sneezing or sniffles by taking away the hay or changing to a different kind of wood shavings, we go ahead and eliminate the potential for a catastrophe.