advantages, particularly in cold dim ages. The modern type usually carries a double row of pens, separated by a central alley and a central alley in width from four to eight feet. At the farrowing season, the individual pens, which are generally from eight to ten feet square, accommodate a sow and her. All pens are provided in the central alley and one opening to the adjacent pens or lots outside. A closet drainage system with a trap for every litter of pigs.
This house is usually constructed of wood, except the floor, which should be cement, with hinge gates between pens so two or more pens may be tinned in the gate. The house should have a two-door, one entering the entry two pens carries all the liquid to the outside.
Feed room, grain bins, and a warm room. The warm room is very useful during early spring and fall farrowing, and provides warm water for hogs in the winter. The roof may be high enough to furnish overhead storage, and have ample provisions for the house should be built very warm for winter, and at the same time be so arranged that it will be cool in summer.
The details as to width of alley, size of pens, height of wall, and other conveniences will depend on local conditions.  personal preference. 