Abstract
Sweating rates from live Holstein cows were measured using a closed chamber VapoMeter, and a portable calorimeter. Measurements were made when cows were in shade and exposed to direct sunlight under different air velocities. The effect of color of hair coat on sweating rate was compared. Comparisons of different sweat rate measuring systems were also compared. The sweating rate at zero air velocity using the VapoMeter was 62 g/h-m 2, and the sweating rates at 0.2 and 1.0 m/s measured using the portable calorimeter were 238 g/h-m 2 and 333 g/h-m 2, respectively when ambient temperature was 33°C, relative humidity was 52% and solar load was 740 W/m 2.
Original language | English (US) |
---|---|
State | Published - 2007 |
Event | 2007 ASABE Annual International Meeting, Technical Papers - Minneapolis, MN, United States Duration: Jun 17 2007 → Jun 20 2007 |
Other
Other | 2007 ASABE Annual International Meeting, Technical Papers |
---|---|
Country/Territory | United States |
City | Minneapolis, MN |
Period | 6/17/07 → 6/20/07 |
Keywords
- Holstein cows
- Portable calorimeter
- Respiration rate
- Shade
- Sunlight
- Sweating rate
ASJC Scopus subject areas
- General Agricultural and Biological Sciences
- General Engineering