Certainly, it can also look like trying to hide guilty parties, but I doubt that's the primary reason. IIRC any organization that deals with non-human animals a

Certainly, it can also look like trying to hide guilty parties, but I doubt that's the primary reason. IIRC any organization that deals with non-human animals are rationally paranoid about being targeted by animal/ecoterrorists like ALF and ABPI, whose direct actions include trespassing, damage property and releasing animals. The USDA has probably heard loud feedback from universities and researchers whom prefer to keep a lower profile, especially not publicly posting exact names and addresses of facilities, which is tantamount to doxing. (Majority of animal welfare groups aren't extreme black bloc anarchist-style: ASPCA, PETA, SHARK, ...)