"No ordinary metal stands up to animal waste.
UF or PVC can survive."
If it is in an area where
animal waste can get on it... I would think it is subject to physical damage from the movement of the animals, not just thier
movements... If they can crap on it, they can walk on it or kick it...
In the CITY I operate in NM, MC, UF below 8' above FF or grade, or any PVC are suject to damage any way. And all the animals are human, and tend not to crap on the wiring methods.... Maybe keep the wiring methods out of reach?