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Successive and conditional discrimination learning in pigs.

Eimear Murphy¹, Lynn Kraak, Rebecca E Nordquist

¹Emotion and Cognition Group, Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 7, 3584 CL, Utrecht, The Netherlands, E.M.Murphy@uu.nl.

Animal Cognition

|March 26, 2013

Summary

Pigs can learn to discriminate tone cues. An active-choice task is more effective than a Go/No-Go task for assessing pig learning abilities.

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Area of Science:

Animal Cognition
Behavioral Science
Animal Learning

Background:

Pigs' cognitive abilities are increasingly studied.
Discrimination tasks are key to understanding animal learning.

Purpose of the Study:

To investigate pigs' capacity for auditory cue discrimination.
To compare the efficacy of successive (Go/No-Go) and conditional discrimination tasks.
To assess learning differences based on birth weight and breed.

Main Methods:

Pigs were trained on successive Go/No-Go and active-choice conditional discrimination tasks.
Performance was measured by response latency and number of correct choices.
Learning was compared between low-birthweight (LBW) and normal-birthweight (NBW) pigs, and between conventional farm and Göttingen miniature pigs.

Main Results:

Four of eight pigs learned the Go/No-Go task; an active-choice task showed clearer results.
LBW pigs learned faster than NBW pigs.
Göttingen miniature pigs learned faster than conventional farm pigs.

Conclusions:

Pigs can discriminate tone cues, with individual and group variations observed.
Active-choice tasks provide more consistent and reliable measures of learning in pigs.
Factors like birth weight and breed influence learning speed.