Automatic monitoring system for the measurement of body weight, food and water consumption and spontaneous activity of a mouse.

Abstract

The simultaneous recording system for body weight, food and water consumption and behavior (spontaneous motor activity and drinking and feeding behavior) of a mouse was developed. The body weight and food consumption were measured by force transducers. Food and water consumption and drinking and feeding behavior were measured by an infrared luminous diode and a phototransistor. Spontaneous motor activity was measured by photosensors. The system control and data acquisition were performed by using a personal computer. Every parameter could be monitored with a desired time interval. All the data collected by this system revealed apparent circadian rhythm. In conclusion, this system would be a powerful tool for pharmacological and/or toxicological research.

Susceptible period of socio-emotional development affected by constant exposure to daylight

“…Common marmoset models must compensate the further study in psychiatry with application from rodents approach. To find developmental modulation in psychology and its mechanisms, special technologies to detect without psychological stress like actigraphy (Ancoli-Israel et al, 2003), infrared recorders used in the present study (Minematsu., 1991), and analytic tools for solution of complexity (Senoo et al,2011, Koshiba, 2013a-e, Pantazatos. 2013, which is expected to improve furthermore to design novel diagnosis and treatment.…”

An open-source device for measuring food intake and operant behavior in rodent home-cages

“…Automated tools have been developed for measuring food intake in home cages with high temporal resolution, although most require modified caging, powdered foods, or connected computers that limit throughput (Ahloy-Dallaire et al, 2019;Farley et al, 2003;Moran, TH, 2003;Yan et al, 2011). These include automated weighing (Hulsey and Martin, 1991;Meguid et al, 1990;Minematsu et al, 1991), pellet dispensers (Aponte et al, 2011;Gill et al, 1989;Oh et al, 2017), or video detection-based systems (Burnett et al, 2016;Jhuang et al, 2010;Salem et al, 2015). In addition to measuring total food intake, understanding neural circuits involved in feeding requires exploring why animals seek and consume food.…”

Correlation of Body Weight Gain with Food and Water Consumption and Spontaneous Activity in Rats

“…All the parameters reveal rhythmic changes. This result suggests that the new system makes it possible to obtain the details and rhythmicity of body weight changes of rats as well as mice [1]. From the visual inspection of plotted data it is considered that a rat get accustomed to this system within two or three days.…”