Sweating rate of dairy cows under shade and sunny environments

K. G. Gebremedhin, P. E. Hillman, C. N. Lee, Robert J Collier

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

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 languageEnglish (US)
Title of host publication2007 ASABE Annual International Meeting, Technical Papers
Volume9 BOOK
StatePublished - 2007
Event2007 ASABE Annual International Meeting, Technical Papers - Minneapolis, MN, United States
Duration: Jun 17 2007Jun 20 2007

Other

Other2007 ASABE Annual International Meeting, Technical Papers
CountryUnited States
CityMinneapolis, MN
Period6/17/076/20/07

Fingerprint

sweating
Sweating
Dairies
Calorimeters
shade
dairy cows
calorimeters
Air
Atmospheric humidity
Hair Color
Color
cows
sweat
air
Sweat
Sunlight
Humidity
hairs
ambient temperature
relative humidity

Keywords

  • Holstein cows
  • Portable calorimeter
  • Respiration rate
  • Shade
  • Sunlight
  • Sweating rate

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Engineering(all)

Cite this

Gebremedhin, K. G., Hillman, P. E., Lee, C. N., & Collier, R. J. (2007). Sweating rate of dairy cows under shade and sunny environments. In 2007 ASABE Annual International Meeting, Technical Papers (Vol. 9 BOOK)

Sweating rate of dairy cows under shade and sunny environments. / Gebremedhin, K. G.; Hillman, P. E.; Lee, C. N.; Collier, Robert J.

2007 ASABE Annual International Meeting, Technical Papers. Vol. 9 BOOK 2007.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gebremedhin, KG, Hillman, PE, Lee, CN & Collier, RJ 2007, Sweating rate of dairy cows under shade and sunny environments. in 2007 ASABE Annual International Meeting, Technical Papers. vol. 9 BOOK, 2007 ASABE Annual International Meeting, Technical Papers, Minneapolis, MN, United States, 6/17/07.
Gebremedhin KG, Hillman PE, Lee CN, Collier RJ. Sweating rate of dairy cows under shade and sunny environments. In 2007 ASABE Annual International Meeting, Technical Papers. Vol. 9 BOOK. 2007
Gebremedhin, K. G. ; Hillman, P. E. ; Lee, C. N. ; Collier, Robert J. / Sweating rate of dairy cows under shade and sunny environments. 2007 ASABE Annual International Meeting, Technical Papers. Vol. 9 BOOK 2007.
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