Killing chickens

So I have not mentioned that I killed my first chicken. Charlotte (who is vegetarian) helped me. Unfortunately we killed one of the meat chickens because it was sick, not for food for the family. I tried giving it some antibiotics and it wasn't looking any better. Months ago when some of our little chicks got sick I made the mistake of babying sick and weak ones which just cost me a lot of time, and they died anyway. I believe they also spread the sickness on. So now I'm a little less likely to keep a sick animal around.