AI Article Synopsis
- A real-time Automated Computerized Rat Eater Meter was created by enhancing existing metabolic cages, using photocells to monitor food access and an electronic scale to measure consumption.
- The study tracked the spontaneous feeding behavior of nondeprived Fischer rats for 35 days, defining a meal as a food consumption event separated by at least 5 minutes of no feeding.
- Findings indicated that rats exhibited more frequent eating during the dark cycle, with consistent meal duration and size, providing valuable insights for monitoring rat feeding patterns over extended periods.
Article Abstract
A real-time Automated Computerized Rat Eater Meter was developed by modifying commercially available metabolic cages. Food access via a feeding tunnel was monitored by photocells. Food consumption was measured by an electronic scale. The signals thus generated were processed by a computer. This allowed us to continuously measure the spontaneous feeding behavior of free-feeding nondeprived Fischer rats for a sum total of 35 study days. Based on our data, we defined a meal as an episode of food consumption preceded and followed by at least 5 minutes of no feeding. Fischer rats showed periodic nychthemeral eating behavior. Food consumption, number of meals, meal sniffs, intermeal sniffs, and, consequently, eating activity were greater during the dark cycle than the light cycle. Meal duration, meal size, and thus food consumption rates remained constant throughout both cycles. Our modification of commercially available metabolic cages provides unique data for continuously monitoring rat feeding patterns over prolonged periods of time.
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| http://dx.doi.org/10.1016/0031-9384(90)90222-p | DOI Listing |
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