I have many hens of anywhere from 2 weeks to 2 years. A few of the older hens stated sneezing and having loose raspy breathing so I gave them a 10 day cycle of duramiacin in thier water as recomended by my local feed store. I have found a few coments on here that sugest to cull any hen with respritory issues. If I decided to do so are they safe to eat ? If not for us then are they safe for the dogs or pigs ? None of my younger hens seem to be afected. We started with all adult hens from several diferent sources, some of wich were less than desirable. After a lot of tlc a proper nutrition they have become quite nice little layers. This is our first year with hens and our first experience with respitory illness. Any advice is welcome, I would love to know how to prevent this in the future.