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Normal rectal temperatures of sheep


, : Normal rectal temperatures of sheep. Amer Jour Physiol 85(2): 251-270

A biometric study was made of 8,526 observations on the rectal temp. of normal range sheep of central Utah. These were treated as a whole and then grouped in different ways to determine the effect of various factors on body temp. The observations when arranged in order of their values formed a frequency polygon of the normal or Gaussian type having a mean value of 102.31[plus or minus].08 and a standard deviation of 1.00 [plus or minus].005. While the observations varied between somewhat wide limits, over 67% fell between 101.5[degree]F. and 103.2[degree]F. The body temp. was highest in lambs, having a mean value of 102.96F. and decreased with age, having a mean value of 101.81[degree]F. in the very old group. The decrease was the greatest the first year. The variability, as measured by the standard deviation also decreased with age. The body temperature increased from about 6.00 a.m. until about 6.00 p.m., having a mean value of 101.84[degree]F. in the earlier group and 102.79[degree]F. in the late afternoon. During this time the variability decreased. When confined in pens and fed alfalfa hay the mean daily temperature gradually decreased for about a week, reaching an average value of 102.25[degree]F. The mean temperature the first day of confinement was about 0.5[degree] higher the first time they were restrained than it was the first day of a second confinement.

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