1970•The Annual of Animal PsychologyOpen access

AMOUNT OF OPEN-FIELD DEFECATION, HOME CAGE DEFECATION AND FOOD AND WATER INTAKE IN MAUDSLEY REACTIVE AND NONREACTIVE STRAINS OF RATS

Hiroshi Imada

Abstract

The number and weight of fecal boluses in the home cages (HC) of Maudsley reactive (MR) (6 males and 6 females) and nonreactive (MNR) (6 males and 6 females) strains of rats were recorded for four days. They were also given the open-field (OF) test of emotionality. The MR rats defecated significantly more in the OF situation than the MNR rats, but there was no tendency for the MR rats to defecate more in the HC than the MNR rats. The OF defecation score proved to be independent of the HC defecation score. Other HC measures and OF measures were recorded. Generally the results were in line with the previous findings.

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Key concepts: Defecation, Feces, Animal science, Body weight, Emotionality, Internal medicine, Psychology, Medicine