Regional differences in sweat rate response of steers to short-term heat stress
| Autor: | Donald E. Spiers, L. E. Wax, B. Scharf, G. E. Aiken |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Male
Atmospheric Science Hot Temperature Time Factors Rump Health Toxicology and Mutagenesis Sweating Environment Models Biological SWEAT Animal science Animals Computer Simulation Castration integumentary system Ecology Chemistry Skin temperature Rectal temperature Anatomy Heat stress Air temperature Cattle Skin Temperature Respiration rate Heat-Shock Response Regional differences |
| Zdroj: | International Journal of Biometeorology. 52:725-732 |
| ISSN: | 1432-1254 0020-7128 |
| DOI: | 10.1007/s00484-008-0165-4 |
| Popis: | Six Angus steers (319 ± 8.5 kg) were assigned to one of two groups (hot or cold exposure) of three steers each, and placed into two environmental chambers initially maintained at 16.5–18.8°C air temperature (T a). Cold chamber T a was lowered to 8.4°C, while T a within the hot chamber was increased to 32.7°C over a 24-h time period. Measurements included respiration rate, and air and body (rectal and skin) temperatures. Skin temperature was measured at shoulder and rump locations, with determination of sweat rate using a calibrated moisture sensor. Rectal temperature did not change in cold or hot chambers. However, respiration rate nearly doubled in the heat (P |
| Databáze: | OpenAIRE |
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