In some older facilities, solid concrete floors are used without bedding, with the floor sloping slightly to the outside walls of the building. At the wall area is a shallow gutter of 3 5-inches depth and variable width. By locating the feeding and watering devices strategically, animal waste deposition is concentrated in the area of the gutter, and that which is not deposited there is worked toward the gutter by animal traffic and the slope of the floor. The gutter is flushed with liquid, either recycled lagoon liquid or fresh water, in a manner similar to the flush system noted earlier but with less volume released per flush.
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