Aviary air-handler design and its relationship to fungal spore loads in the air

J Zoo Wildl Med. 2007 Dec;38(4):540-7. doi: 10.1638/1042-7260(2007)38[540:AADAIR]2.0.CO;2.


Fungal spore loads in the air of cool-temperature, temperate, and tropical aviaries were collected with an Andersen N-6 air sampler. The relationship of spore loads to air-handler and exhibit design in these three environments was examined. In addition, a 2-yr longitudinal study of fungal spore loads in the air of a newly designed and installed air-handling system in the R. J. Reynolds Forest Aviary at the North Carolina Zoological Park was compared to the earlier air-handling system that it replaced. High-efficiency particulate air filters installed in cool-temperature aviaries produced the cleanest air, although pleated filters showed only marginally higher spore loads. Temperate and tropical aviaries with pleated filters or bag filters with variable-velocity fans had much higher spore loads. Tropical and temperate exhibits with bag filters and constant-velocity fans produced the cleanest air in tropical and temperate exhibits. Information on the relative effectiveness of different air-handling system designs and related costs/benefits should be used by zoo managers when they are designing or retrofitting aviary air-handling systems.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Air Microbiology*
  • Animals
  • Animals, Zoo
  • Birds*
  • Colony Count, Microbial
  • Filtration / instrumentation
  • Filtration / methods
  • Filtration / standards
  • Filtration / veterinary*
  • Fungi / growth & development
  • Fungi / isolation & purification
  • Housing, Animal*
  • Spores, Fungal / isolation & purification*
  • Temperature