| 摘要 |
A large capacity system for hog production in a controlled environment provides, within an inflated air dome housing, a base from the central area of which rises a multi-tier hog finishing structure. At generally base level a relatively wide area about the tiered structure includes a first or breeding and farrowing zone adjacent the inside perimeter of the housing dome and a second or nursery feeder pen zone between the first zone and a third zone under the tiered structure. The third zone provides an initial growing and observation area to receive pigs from the nursery feeder pen zone and from which the pigs are transferred at the proper intervals to the tier levels for finishing to market weight. This new animal movement program corresponds directly to advantageous proportionate management activity and observation requirements and maximizes these activities at the most pleasing area of the structure. Waste disposal is effected substantially without need for flushing cleaning, and the waste is reprocessed and pasturized and recycled into the feed supply, being delivered to the animals by a continuously operating automatic and low maintenance feed system. Innovations in the air dome comprise shielding against solar radiation during times of hot outside temperatures and insulating against cold outside temperatures through the use of reflective plastic membrane, a transparent area is provided in the dome housing peripherally adjacent the first zone and a substantial translucent area is provided at the back of the dome for daylight illumination of the interior. A new peripheral air circulation system efficiently utilizes the slatted deck structure for the pens.
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