The wide-span house is one-story, with the lowest cages about 1m above the floor, where the manure accumulates.
The floor is usually concrete and may be flat, in which case the manure is removed by tractor-mounted scraper.
Often the floor is recessed beneath the cages (shallow pit), and the manure is removed frequently with a mechanical cable-operated scraper or by flushing with large quantities of water pressurized by electric pumps.
With both the scraper and the flush systems, manure is brought to one end of the house and then augured or flushed into a lagoon, or transported for spreading on fields.
The scraper and flush systems must be operated two or three times a week to prevent excessive accumulation of manure, which the equipment cannot move effectively.
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