A fastener for securing livestock mats to a foundation having at least one recess includes a body formed from fiber-reinforced polymer material. The body has a shank with a first, terminal end and an oppositely disposed second end. The shank may be sized and shaped to be received into the recess in the foundation. A head at the second end of the shank includes an outer peripheral edge extending radially outwardly from the shank relative to a longitudinal axis of the shank. The shank further includes oppositely disposed first and second sides and a foundation engaging surface on at least a portion of at least one of the first or second sides. The foundation engaging surface is contoured to frictionally engage the foundation when the shank is received therein.
