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Body temperature of huddling newborn Zucker rats
Authors:I. Schmidt  R. Kaul  H. J. Carlisle
Affiliation:(1) Department of Psychology, University of California at Santa Barbara, 93106 Santa Barbara, CA, USA
Abstract:Summary Daily mean core temperature (
$$bar T_c $$
) in huddling Zucker rat pups reared at 25°C revealed the onset of a significantly lower
$$bar T_c $$
in fa/fa pups on day 6. The difference between any pup's
$$bar T_c $$
and the mean
$$bar T_c $$
of that half of the litter with the highest
$$bar T_c $$
on any given day was an early marker for genotype. Calculating the mean difference for any 2 consecutive days from day 6 onwards gave values for each fa/fa pup that were outside the 99% confidence limits for the individual observations in the Fa/-pups.
Keywords:neonate  rat  obesity  body temperature  thermoregulatory behavior
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