PURPOSE:To obtain the title clean piggery useful as raising pig house, capable of readily heating, by making a concrete floor at the front of piggery floor and a wire net floor at the rear, installing an upright wall for preventing inflow of discharge at a boundary floor and letting the wire net floor rotatable and a rear fence openable and closable. CONSTITUTION:A concrete floor 1 is made at the front of high piggery floor, a wire net floor 2 is laid at the rear thereof, the wire net floor 2 is formed by attaching a wire net 2a to pipe frames 26 and enveloping the frames, rotatably received on a catch 3 closely fixed to the rear face the concrete floor 1 by a front frame pipe 2c of the pipe frames 2b and let vertically rotatable. When discharge is taken out, the wire net floor can be made into a closed fence at the rear face of the concrete floor 1, a rear fence 9 is made openable and closable, an upright wall 6 for preventing inflow of discharge into the lower part of the concrete floor 1 is installed at the boundary floor between the concrete floor 1 and the wire net floor 2, both a fence 8 and the fence 9 at the front and the rear are openably and closably attached to a side fence 7.
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