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Training Rats Using Water Rewards Without Water Restriction.

Pamela Reinagel1

  • 1Section of Neurobiology, Division of Biological Sciences, University of California, San Diego, La Jolla, CA, United States.

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|May 19, 2018
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Summary
This summary is machine-generated.

Researchers trained rats using Citric Acid (CA) water, eliminating water restriction for behavioral tasks. This method supports animal welfare and scientific productivity by enabling training without deprivation.

Keywords:
high-throughput behavioroperant conditioningrat behaviorrodent trainingwater restriction

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Area of Science:

  • Systems Neuroscience
  • Animal Behavior

Background:

  • High-throughput behavioral training in rodents is crucial for systems neuroscience.
  • Current methods often rely on water or food restriction to motivate animals.
  • This restriction can impact animal welfare and complicate experimental design.

Purpose of the Study:

  • To investigate if a gap exists between physiological water need and hedonic water satiety.
  • To determine if this gap can be leveraged to train rats using water rewards without water restriction.
  • To assess the efficacy and safety of using Citric Acid (CA) in water for training.

Main Methods:

  • Female rats were provided *ad libitum* access to water containing Citric Acid (CA).
  • Rats engaged in a visual task with water rewards under different access conditions (24h/day or 2h daily sessions).
  • Performance was compared to rats trained under traditional water restriction protocols.

Main Results:

  • Rats with *ad libitum* CA water maintained health while drinking less than unrestricted controls.
  • Performance in CA-water trained rats reached 68-84% of trials compared to water-restricted rats.
  • High trial numbers (up to 804 ± 285/day) were achieved with small water rewards (<25 μl).

Conclusions:

  • Water rewards can be used for rat training without water restriction, at least in some contexts.
  • Citric Acid (CA) water appears to be a viable method to bridge the gap between water need and satiety.
  • This approach offers benefits for both animal welfare and scientific productivity in neuroscience research.