It's good to have a plan, or a vision, for your chickens. But I think it's important to remain open minded, and accept that things may go differently than planned. I haven't had antibiotics myself for longer than I can remember, probably more than 20 years, and if you had asked me when I got my chickens, I would have said I was never ever going to use them for the chickens. Things did not turn out like this. It may come to a choice between saving a loved pet and staying with your vision, it's not always an easy choice. Immunity, as far as I know, develops with exposure. I don't think a flock, however excellent their living conditions, will be completely immune when first exposed to a virus, bacteria, parasite or strain.My plan, based on everything that I have read here, (a lot from you, @Perris and @TropicalChickies and others in other threads.) is to encourage the chickens natural immunity.
If the backyard flocks build their immunity, naturally, they will be stronger and pass that on to their chicks and over generations, that natural immunity should become stronger than anything they could get from a vaccine.
- Provide proper feed.
- Provide a clean, natural (as possible) living environment.
- Supply natural immunity boosters, such as oregano, rosemary, turmeric, that they can eat as needed.
- Observe proper quarantine procedures, if we ever add any more members, from outside the flock.
Piou-piou the runt was my first chicken to be given antibiotics for a wound. When she had a growth and mobility problem as a chick, I was certain she wouldn't survive free ranging, but she had a will of iron and she loved her freedom, so she did. This and the fact that we have become very attached to her, means that although we know she likely won't live long, we will try to help her enjoy life for a little longer than she would under nature’s reign.