An animal confinement pen flooring system, particularly adapted for swine farrowing
operations, includes at least first and third rows of spaced-apart molded plastic
foraminous flooring panels and an intermediate row of cast iron foraminous flooring
panels, all of the panels being supported on spaced-apart elongated support rails
in a stand off position above a subfloor. The plastic and cast iron panels each
include opposed sets of hooked-shaped flanges for engagement with support rails,
respectively, for supporting the panels thereon. The cast iron panels each include
a boss and an opposed recess disposed on opposite sides thereof for interconnecting
adjacent panels by cooperating hook portions formed on the boss and in the recess
of the adjacent panel, respectively. The combination of the cast iron and molded
plastic flooring panels provides enhanced comfort for swine in farrowing operations.