Aviary air-handler design and its relationship to fungal spore loads in the air.
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.
Dykstra
Michael J
MJ
Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina 27606, USA. michael_dykstra@ncsu.edu
Reininger
Kenneth
K
D000391:Air Microbiology; D000818:Animals; D000836:Animals, Zoo; D001717:Birds; D015169:Colony Count, Microbial; D005374:Filtration / Q000295:instrumentation / Q000379:methods / Q000592:standards / Q000662:veterinary*; D005658:Fungi / Q000254:growth & development / Q000302:isolation & purification; D006799:Housing, Animal; D013172:Spores, Fungal / Q000302:isolation & purification*; D013696:Temperature