Condensation principles (151K)
A cold surface, such as a glass of ice water, can cool surrounding
warm moist air until it no longer can hold the water vapor it is carrying.
The result is condensation on the cold surface, or ice if the surface is
cold enough.
Shed and outside lot (192K)
Grow-finish pigs in a partly-slotted shed and outside lot, with
large round feeder.
Mono-slope buildings (251K)
These building are designed and oriented to maximize penetration of solar
energy during winter by taking advantage of the fact that the winter
sun is low in the southern sky. During summer, the roof overhang
provides shade protection for the animals.
Shed and outside lot (292K)
Lot is sloped to one corner where rainfall runoff can be controlled. A settling
basin removes most of the manure solids that are washed off the lot. Effluent is
diverted to cropland where the manure nutrients are utilized. In larger lots,
lot runoff would be stored in a holding pond and irrigated onto cropland.
Growing pigs in a flush gutter (288K)
Water is flushed though the buildings several times each day to remove manure.
Pigs tend to dung in this channel, keeping the rest of their pen clean. In
areas where fresh water is not abundant, the flushed water can be treated in
lagoon before recycling. In this case, a slotted floor would be used to prevent
disease transmission.
Feedlot holding pond (278K)
Used to collect runoff containing manure solids from an outside lot.
Runoff is stored until it can be irrigated onto cropland to utilize
the nutrients.
Naturally ventilated grow-finish barn (273K)
Barn is insulated to protect against both cold and hot weather. The narrow
width allows fresh air to move freely across the room.
NOTE: Pen partitions adjacent to aisleway should be relatively open,
such as oven wire, to allow cross-flow of ventilation air.
Liquid manure vacuum tanker (244K)
Being used to remove manure from storage and apply it to cropland where the
manure nutrients can be utilized.
(51K)
(52K)
Comments or questions
Last updated: December 3, 2001
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