I am loathe to enter this topic, since last time I breathed mention of my own free-rangin- chicken- killin pooch it near started a holy war...but....if it might help you maintain peace between your dog and your chicks, then it is worth it.
Aside from a major whuppin with the dead chicken...we took poochie in with us to do chores, every day and night, on a leash. We made him lie down with the birds, let them roost on his head, and made him bunk in the barn with them (outside their pen, of course.) The idea was to teach him that these birds were part of his "pack" just like the cats that he had to initially be persuaded not to eat. Prior to this, I am sure he saw them simply as "things in my yard that might be fun to chase."
After a few weeks of this, we started giving him a bit of supervised freedom with the chickens...and he was fine, so we took a deep breath and hoped for the best as we walked...away. Tim has now been fully returned to his previous status of driveway-holder-downer. The chickens graze all around him, inches from his nose, all day, and he has not so much as blinked funny at them. He now chooses to go in the barn with them at night instead of the house- even jumped the barn door to get in there one night.
I hate to jinx it, but I think that Tim will never again kill a chicken. Course, anything is possible, and it has not been all that long---but it is looking promising anyway. I hope this maybe helps you out.