時間栄養学的なアプローチが成獣ラット飼育の摂食効率に及ぼす影響

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  • ジカン エイヨウガクテキ ナ アプローチ ガ セイジュウ ラット シイク ノ セッショク コウリツ ニ オヨボス エイキョウ
  • The Influence of Timing on Meals of Laboratory Adult Rats

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Abstract：The purpose of this study is to clarify how eating patterns affect laboratory adult rats.We performed two sets of experiment with ten-week old adult rats. The rats' eating pattern was determined for twelve hours from 8:00am to 8:00pm. Each set of experiments had six rats and were divided into two groups with three rats each.Three rats of one of the groups were fed from 8:00am to 8:00pm in the darkness with a black-out curtain closed, which was opened from 8:00pm to 8:00am to provide a photo period under lights. Three rats of the other group were fed from 8:00am to 8:00pm with a black-out curtain open, which was closed from 8:00pm to 8:00am to provide darkness. We fed a standard diet to six rats of one of the sets for three weeks and a high-fat diet to six rats of the other set for three weeks.Our results suggested that the different timing of darkness and lighting periods did not affect the rats' growth specifically. We may, however, reconsider short-term experiments with rats since we detected some changes of eating efficiency in their behavior.

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