From: "Byron Bromley" <Byron.Bromley@gsd-co.com> > Salt is from the urea. Like most penned animals > the urea has a chance to build up. Yulp, it's also the white stuff in chicken poop. Like my Daddy used to say, "Son, do you know what that white stuff is in chicken sh*t?" "Um, no, Pop." "Well, boy, that's chciken sh*t too." carp