I don't think cattle get Crohn's...the link hasn't been completely proven but many scientists/farmers believe that Crohn's and Johne's are closely related if not the same thing, only humans get Crohn's and animals get Johne's. I did a paper on Johne's last semester -here are a couple sites I used-they all have some info on the Chrohn's/Johne's link. http://johnes.org/ http://www.johnesdisease.org/ http://www.cfsph.iastate.edu/Feature/johnes.htm http://www.crohns.org/
