Phase maps for particles and microorganisms in animal quarters

Area of Science:

• Environmental science
• Microbiology
• Animal science

Background:

• Understanding airborne particle and microorganism levels in animal housing is crucial for environmental control and animal health.
• Previous studies have not fully detailed the diurnal patterns of particle and microorganism emission across different animal species.

Purpose of the Study:

• To quantify and compare particle and microorganism fallout in animal rooms housing rats, rabbits, cats, and monkeys.
• To establish correlations between particle and microorganism emission patterns and animal activity/feeding cycles.

Main Methods:

• Fallout measurements were conducted over light and dark periods in animal rooms.
• Correlations between particle and microorganism parameters were analyzed.
• Phase maps were created using 24-hour means and percentage deviations.

Main Results:

• Rats exhibited a significant increase in particle and microorganism emission during nighttime, aligning with their activity cycle.
• Cats and monkeys showed increased emission primarily during feeding periods.
• Rabbit rooms displayed relatively uniform emission levels throughout both day and night.

Conclusions:

• Animal species-specific diurnal patterns influence particle and microorganism emission in their environments.
• Activity and feeding behaviors are key drivers of emission variations.
• These findings inform targeted environmental management strategies in animal facilities.