Airborne particle concentration and meteorologic conditions associated with pneumonia incidence in feedlot cattle

Journal Article · Mon Dec 01 00:00:00 EST 1986 · Am. J. Vet. Res.; (United States)

OSTI ID:6927156

MacVean, D W; Franzen, D K; Keefe, T J; Bennett, B W

To elucidate the role of air quality on the occurrence of pneumonia in feedlot cattle, the following environmental values were measured at a feedlot: suspended particulates in 5 particle-size fractions, relative humidity, air temperature, and barometric pressure. Pneumonia incidence data were classified by the number of days the cattle had been at the feedlot (days on feed). The concentration of airborne particles, range of temperature, days on feed, and season of the year were associated with incidence of pneumonia in cattle. Pneumonia incidence rates were greatest both within 15 days of arrival at the feedlot and during the fall sampling periods. The incidence of pneumonia in the 16 to 30 days-on-feed group was closely associated with the concentration of particles 2.0 to 3.3 microns in diameter and the range of daily temperature when exposure occurred 15 days before the onset of disease in the fall and 10 days before in the spring.

• Research Organization: Colorado State Univ., Fort Collins
• OSTI ID: 6927156
• Journal Information: Am. J. Vet. Res.; (United States), Vol. 12
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
59 BASIC BIOLOGICAL SCIENCES
CATTLE
PNEUMONIA
PARTICULATES
ECOLOGICAL CONCENTRATION
TOXICITY
AIR POLLUTION
DISEASE INCIDENCE
HUMIDITY
METEOROLOGY
REGRESSION ANALYSIS
SEASONAL VARIATIONS
ANIMALS
DISEASES
DOMESTIC ANIMALS
MAMMALS
MATHEMATICS
PARTICLES
POLLUTION
RESPIRATORY SYSTEM DISEASES
RUMINANTS
STATISTICS
VARIATIONS
VERTEBRATES
560300* - Chemicals Metabolism & Toxicology
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
550900 - Pathology