Five groups of pregnant Sprague-Dawley rats were irradiated for 10-40 min on gestation day 9 in a 27.12-MHz radiofrequency field at a magnetic field strength of 55 Aim and an electric field strength of 300 V/m. The specific absorption rate was 10.8 0.3 W/kg. Exposures were terminated after the rat's
Relationships between body temperature and performance traits in heat-stressed rats
β Scribed by K.M. Cammack; D.E. Spiers; P.A. Eichen; W.R. Lamberson
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 445 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0306-4565
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β¦ Synopsis
Male Sprague Dawley rats (n ΒΌ 38) were allocated to thermoneutral, diurnal heat stress or constant heat stress treatments during pre-pubertal and post-pubertal ages. Analyses of internal body temperature and performance traits suggest animals respond differently in diurnal versus constant heat stress conditions. Greater fluctuations in average daily internal body temperature during diurnal heat stress may mediate partial recovery from heat stress, and hence, better performance than during constant heat stress. Correlation coefficients indicate early measures of internal body temperature can be used to gauge subsequent performance in similar environmental conditions.
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