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Lab Anim. 1986 Apr;20(2):91-6.

Variation in pentobarbitone sleeping time in mice. 2. Variables affecting test results.

Abstract

The effect of some environmental factors on the pentobarbitone sleeping time (PST) in inbred strains of mice has been investigated. Age, dose level and fasting before the test significantly altered the PST while the source of the drug and regular handling of the mice had no effect. None of these factors affected strains differentially. Unsystematic effects such as litter differences contributed only a small proportion of the total variation in the experiments. The strain rankings were different from those obtained in some previous experiments. The effects of some of the environmental factors on the PST did not always agree with previous work. The implications of these results for the design of similar experiments and the relevance of baseline values in laboratory animals are discussed.

PMID:
3702329
[PubMed - indexed for MEDLINE]
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