Environmental design for a total animal health care system

Abstract

The design requirements to achieve a good environment for healthy animals are described. Mechanically ventilated livestock buildings are usually insulated, with a constant maintained temperature of about 40 °F or above, extra heat being applied as necessary; naturally ventilated buildings depend on air movements, have no insulation, and inside temperatures approximate to outside temperatures. The fresh air inlet and exhaust systems are discussed in detail for mechanical ventilation; types of fans are described and rating tables illustrate their performance. Rules for the location of fans and the design of the fresh air intake system are emphasized and the influence of seasonal factors is discussed. The location of naturally ventilated buildings should be at least 50 ft away from other structures; ridge and wall openings are discussed in terms of dimensions; the roof underside should be steep and smooth and of proper construction.