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May 2022

A contact eatometer suitable for feeding restriction schedules

Author(s): Zamora, S., Madrid, J. A.

Journal/Book: Physiol Behav. 1996; 59: The Boulevard, Langford Lane, Kidlington, Oxford, England OX5 1GB. Pergamon-Elsevier Science Ltd. 1179-1183.

Abstract: We describe and test a programmable feeding system based on a contact eatometer, previously developed in our laboratory, consisting of a swinging grid beneath a hopper that is moved by the rat each time it wants to eat. This has now been connected to a solenoid that can block the movement of the grid to prevent access to the food. It also provides a continuous record of food approaches even during restricted periods when no food is made available, and so it is useful in studying the synchronizing role of food in the circadian rhythms of feeding behavior. The simplicity and cheapness of its construction and the effective blocking of access to food make it an ideal tool in chronobiological studies involving the simultaneous use over long periods of a large number of animals.

Note: Article P Lax, Univ Murcia, Fac Biol, Dept Physiol & Pharmacol, Campus Espinardo, E-30100 Murcia, Spain

Keyword(s): eatometer; food restriction; feeding behavior; meal patterns; circadian rhythms; rat; CIRCADIAN-RHYTHMS; FOOD ACCESS; RATS; ENTRAINMENT; CYCLES

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