This is the Merk manual for birds, it states that the "mizadoles" will cure it, (but it is an off-lable use for turkeys). I have other good links that have success stories and whatnot, but other forums so won't post; the reason it's not commonly given is because the turkey would be pretty iffy for eating; but if you had a couple breeders it could be worthwhile.
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/203000.htm
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/203000.htm