I recently contacted our local extension agent here in NW Georgia and this is what he sent me. It is info provided by the Univ of North Carolina on all aspects of backyard poultry.
Here is the link(let me know if this doesnt work)
http://www.ces.ncsu.edu/depts/poulsci/tech_manuals/small_flock_resources.html
Here is the link(let me know if this doesnt work)
http://www.ces.ncsu.edu/depts/poulsci/tech_manuals/small_flock_resources.html