A benefit of the deep pit system is that manure can be stored for several months before removal. This type of unit is typically used for sheep and poultry because that manure tends to be nearly solid as it is produced. It has also been used for swine manure where bedding such as chopped corn stalks is placed over the pit floor before animals are placed in the barn. The shallow - pit, us ually covered with a slotted floor is a very common way to handle manure from poultry production. The manure is mechanically scraped or flushed with water to a storage area, or directly loaded into a spreader for field application.
Pullets are young female poultry.
There are several systems of screening and filtration that may be used to separate manure solids from liquids. In regions where evaporation exceeds rainfall, evaporation ponds may be used to dry livestock manure. The pond should be large enough to hold all the manure during the wet season, plus runoff from the any storms expected over the storage time. Dehydrators usually have a large rotating drum with a sizable electrical power demand. Fresh manure usually does not work well in the dryer.