Okay...this discussion really has me thinking (thanks for waking up my brain!).... One of my neighbors keeps chickens for eggs and replaces them every 2 years. He and his wife cornered my husband the other morning to confirm that we are now keeping chickens as well and to strongly, emphatically explained that we MUST replace our flock every 2 years to avoid illness in the flock. I don't agree with that...at all. It makes no sense to me. As I understand it, replacing a flock consistently every 1-2 years was more about maintaining high egg production than about maintaining a healthy environment. That said, it seems to me that the best way to minimize disease is via aggressive culling of infected and weak birds and breeding of strong ones while keeping the environment "clean"....not sterile, but clean. Everything you've discussed above seems to reinforce my perception...and add to it. That said, I do have a question....Is it necessary or even essential to move a flock to a different location after keeping them in a particular area after a span of time? I'm not talking about cleaning, disinfecting and cleaning coops...but referencing the runs where my chickens spend their days. I try to provide a minimum of 10 sq. feet of "run space" per bird since I can't just let them run free in my yard. Does the ground need to "rest" at some point? And if so, for how long?
I haven't ever had a sick chicken, nor has my father who raised chickens for many years. We never clean or sanitize the coop, never heard of worming chickens until reading BYC. I didn't really know a lot about chickens until becoming a BYC member, learning more all the time, this thread is very informative. One reason Ithink our chickens never get sick is a well ventilated coop and using the deep litter method. Didn't know what it was considered it was just how we thought everybody raised chickens. Thought I was doing something wrong reading posts on people cleaning and disinfecting their coops, linoleum floors. Then I read some using the 'deep litter method' basically what we've done for years. It makes for healthier chickens, and much better for healthy chicks starting them on litter.Deep litter has anti-coccidiosis properties. Read up on it.